Add new swizzle math operation tests
New tests for combined swizzle and math operations using various vector
types. Includes addition, subtraction, multiplication, and division
operations with repeated and non-repeated swizzles.
New tests:
- dEQP-GLES3.functional.shaders.swizzle_math_operations.vector_add.*
- dEQP-GLES3.functional.shaders.swizzle_math_operations.vector_subtract.*
- dEQP-GLES3.functional.shaders.swizzle_math_operations.vector_multiply.*
- dEQP-GLES3.functional.shaders.swizzle_math_operations.vector_divide.*
Change-Id: I4541a88057f70dd41f4f27b81313748094e76037