…ic Arrays (apache#35479)

### Rationale for this change

This pull request is a followup to apache#34563. To facilitate the implementation of future array types, we would like to first create a C++ template class for numeric arrays. We also want to start adding basic tests for the array functionality in the MATLAB interface. 

### What changes are included in this PR?

1. Added a C++ template Class called `NumericArray` templated on `CType`.
2. Re-implemented the `Float64Array` C++ proxy class in terms of the new template class, i.e. `NumericArray<double>`.
3. Added a method called `double()` on the MATLAB Float64Array class to convert the arrow.[Type]Array to a MATLAB `double` array.
4. Added basic tests for round-tripping float64 arrays.
5. Created a base C++ proxy `Array` class that all proxy array classes will inherit from.
6. Renamed `Print()` to `ToString()` and made it return a string instead of printing to the screen.

### Are these changes tested?

Yes, we added automated test cases to the test class `tFloat64Array.m`. In addition, we manually qualified these changes on macOS.

### Are there any user-facing changes?
Yes, the `Print()` method is no longer public and there is now a method called `double()` on `arrow.array.Float64Array`. 

Included below is a simple example of using the `double()` method:

```matlab
>> arrowArray = arrow.array.Float64Array([1, 2, 3])            

arrowArray = 

[
  1,
  2,
  3
]

>> matlabArray = double(arrowArray)

matlabArray =

     1
     2
     3

>> class(arrowArray)

ans =

    'arrow.array.Float64Array'

>> class(matlabArray)

ans =

    'double'
```

### Future Directions

1. Support the rest of the numeric types.
2. Add an abstract MATLAB base class called `arrow.array.Array`.
3. Continue building out the methods (e.g. `length()`)
4.  Support `null` values (validity bitmap).
5. Handle converting non-ascii characters from `UTF-8` to `UTF-16`.
6. Handle errors in the C++ layer. 

* Closes: apache#35411

Lead-authored-by: Sarah Gilmore <sgilmore@mathworks.com>
Co-authored-by: sgilmore10 <74676073+sgilmore10@users.noreply.github.com>
Co-authored-by: Kevin Gurney <kgurney@mathworks.com>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

…ic Arrays (apache#35479)

### Rationale for this change

This pull request is a followup to apache#34563. To facilitate the implementation of future array types, we would like to first create a C++ template class for numeric arrays. We also want to start adding basic tests for the array functionality in the MATLAB interface. 

### What changes are included in this PR?

1. Added a C++ template Class called `NumericArray` templated on `CType`.
2. Re-implemented the `Float64Array` C++ proxy class in terms of the new template class, i.e. `NumericArray<double>`.
3. Added a method called `double()` on the MATLAB Float64Array class to convert the arrow.[Type]Array to a MATLAB `double` array.
4. Added basic tests for round-tripping float64 arrays.
5. Created a base C++ proxy `Array` class that all proxy array classes will inherit from.
6. Renamed `Print()` to `ToString()` and made it return a string instead of printing to the screen.

### Are these changes tested?

Yes, we added automated test cases to the test class `tFloat64Array.m`. In addition, we manually qualified these changes on macOS.

### Are there any user-facing changes?
Yes, the `Print()` method is no longer public and there is now a method called `double()` on `arrow.array.Float64Array`. 

Included below is a simple example of using the `double()` method:

```matlab
>> arrowArray = arrow.array.Float64Array([1, 2, 3])            

arrowArray = 

[
  1,
  2,
  3
]

>> matlabArray = double(arrowArray)

matlabArray =

     1
     2
     3

>> class(arrowArray)

ans =

    'arrow.array.Float64Array'

>> class(matlabArray)

ans =

    'double'
```

### Future Directions

1. Support the rest of the numeric types.
2. Add an abstract MATLAB base class called `arrow.array.Array`.
3. Continue building out the methods (e.g. `length()`)
4.  Support `null` values (validity bitmap).
5. Handle converting non-ascii characters from `UTF-8` to `UTF-16`.
6. Handle errors in the C++ layer. 

* Closes: apache#35411

Lead-authored-by: Sarah Gilmore <sgilmore@mathworks.com>
Co-authored-by: sgilmore10 <74676073+sgilmore10@users.noreply.github.com>
Co-authored-by: Kevin Gurney <kgurney@mathworks.com>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

…ic Arrays (apache#35479)

### Rationale for this change

This pull request is a followup to apache#34563. To facilitate the implementation of future array types, we would like to first create a C++ template class for numeric arrays. We also want to start adding basic tests for the array functionality in the MATLAB interface. 

### What changes are included in this PR?

1. Added a C++ template Class called `NumericArray` templated on `CType`.
2. Re-implemented the `Float64Array` C++ proxy class in terms of the new template class, i.e. `NumericArray<double>`.
3. Added a method called `double()` on the MATLAB Float64Array class to convert the arrow.[Type]Array to a MATLAB `double` array.
4. Added basic tests for round-tripping float64 arrays.
5. Created a base C++ proxy `Array` class that all proxy array classes will inherit from.
6. Renamed `Print()` to `ToString()` and made it return a string instead of printing to the screen.

### Are these changes tested?

Yes, we added automated test cases to the test class `tFloat64Array.m`. In addition, we manually qualified these changes on macOS.

### Are there any user-facing changes?
Yes, the `Print()` method is no longer public and there is now a method called `double()` on `arrow.array.Float64Array`. 

Included below is a simple example of using the `double()` method:

```matlab
>> arrowArray = arrow.array.Float64Array([1, 2, 3])            

arrowArray = 

[
  1,
  2,
  3
]

>> matlabArray = double(arrowArray)

matlabArray =

     1
     2
     3

>> class(arrowArray)

ans =

    'arrow.array.Float64Array'

>> class(matlabArray)

ans =

    'double'
```

### Future Directions

1. Support the rest of the numeric types.
2. Add an abstract MATLAB base class called `arrow.array.Array`.
3. Continue building out the methods (e.g. `length()`)
4.  Support `null` values (validity bitmap).
5. Handle converting non-ascii characters from `UTF-8` to `UTF-16`.
6. Handle errors in the C++ layer. 

* Closes: apache#35411

Lead-authored-by: Sarah Gilmore <sgilmore@mathworks.com>
Co-authored-by: sgilmore10 <74676073+sgilmore10@users.noreply.github.com>
Co-authored-by: Kevin Gurney <kgurney@mathworks.com>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>