feat(go): add float16 support to go

[ayush00git]

Referenced Issue - #3206

I've gone through the references in the #3206 issue and here are my implementation plans for the float16 type in go.

Implementation Plan

1. Keep all the work in a separate folder under go/fory/float16
2. Core Type Definition (float16.go): Create a new Float16 type based on uint16 to hold the raw bits, implementing essential constants (NaN, Inf) and conversion methods (FromFloat32(), Float32()) that handle IEEE 754 logic.
3. Math & Utility Methods: Implement arithmetic operations (Add, Sub, Mul, Div) by temporarily promoting values to float32 for calculation, along with classification helpers like IsNaN, IsFinite, and strict IEEE 754 comparison methods (Equal, Less).
4. Serialization Logic (float16_serializer.go): Develop a dedicated float16Serializer that handles writing the 2-byte structure to the wire with the correct FLOAT16 tag and reading it back.
5. System Integration (types.go, primitive.go): Update the Fory type system to recognize float16 by adding new Dispatch IDs (PrimitiveFloat16DispatchId), registering the serializer, and setting the fixed size to 2 bytes.
6. I/O & Array Support (writer.go, reader.go, array_primitive.go): Modify the main read/write loops to process the new Dispatch IDs and add support for efficient []float16 arrays using the FLOAT16_ARRAY wire type.

What's implemented so far:

1. Added the Float32FromFloat16() and Float32() which properly handles the exception types, IsNaN, IsInf, overflow, underflow of exponential and mantissa.
2. Add other basic functions and comparison methofds to the float16.go.
3. Created float16_serializer.go which includes, read and write methods for float16, basically a I/O driver for float16 type.
4. Created float16_slice_serializer.go, a serializer for []float16.Float type.
5. Created float16_array_serializer.go a seriailzer for [N]float16.Float type.

[ayush00git]

Hey @chaokunyang
I just got a little confused, i have created separate files for tests as well like - float16_serialization_test.go, float16_test.go and slice_primitive_test.go are these also to do appended in some existing tests files? Like for the arrays tests there was a existing file array_primitive_test.go so I appended that tests to that file.

[ayush00git]

Hey @chaokunyang
I'm done with the implementations, and for now i've created two separate files - primitive.go and primitive_test.go to include the unit tests for float16 just to prefer isolation of this type, as go doesn't supports it natively.
If you prefer merging them to the existing fory_typed_test.go and buffer_test.go, i'll do that.

[chaokunyang]

Create separate test files is better, I will check it later. And merge it if everything goes right

[ayush00git]

Create separate test files is better, I will check it later. And merge it if everything goes right

Okk, in the meantime i'll try adding float16 support to other languages as you requested in the latest issues.

[chaokunyang]

LGTM