[MATLAB] Add a static constructor method named fromMATLAB to arrow.array.StructArray

[sgilmore10]

Describe the enhancement requested

Right now, the only way to construct an arrow.array.StructArray is to call its static method fromArrays method. Doing so requires users to first construct the individual field arrays before creating the StructArray.

>> a1 = arrow.array([1 2 3 4]);
>> a2 = arrow.array(["A" "B" "C" "D"]);
>> s1 = arrow.array.StructArray.fromArrays(a1, a2, FieldNames=["Number" "String"])

s1 = 

-- is_valid: all not null
-- child 0 type: double
  [
    1,
    2,
    3,
    4
  ]
-- child 1 type: string
  [
    "A",
    "B",
    "C",
    "D"
  ]

It would be nice if users could construct StructArrays from MATLAB tables:

>> t = table([1 2 3 4]', ["A1" "A2" "A3" "A4"]', VariableNames=["Number", "String"])
>> s1 = arrow.array.StructArray.fromMATLAB(t)

s1 = 

-- is_valid: all not null
-- child 0 type: double
  [
    1,
    2,
    3,
    4
  ]
-- child 1 type: string
  [
    "A",
    "B",
    "C",
    "D"
  ]

Adding fromMATLAB to StructArray enables returning StructArrays from arrow.array():

>> t = table([1 2 3 4]', ["A1" "A2" "A3" "A4"]', VariableNames=["Number", "String"])
>> s1 = arrow.array(t)

s1 = 

-- is_valid: all not null
-- child 0 type: double
  [
    1,
    2,
    3,
    4
  ]
-- child 1 type: string
  [
    "A",
    "B",
    "C",
    "D"
  ]

Component(s)

MATLAB

[sgilmore10]

take