feat: Add Gray Code Conversion Algorithm using Bit Manipulation

[Acuspeedster]

Fixes issue:

lack of gray code convertor in the xor algorithms #6789

Changes:

• Added the Gray code conversion algorithm that converts a binary number n to its Gray code equivalent using the following operation: n ^ (n >> 1).
• Provided a detailed description and explanation of how the algorithm works and its use cases.
• Optimized for efficiency with constant time complexity (O(1)).

[Acuspeedster]

@AdiChat Review this please.

[Acuspeedster]

@arnavb @hwchiu @AdiChat @Vitorvgc @abdouskamel

[AdiChat]

Remove the binary file.

code/bit_manipulation/src/output/gray_code_conversion.exe

[Acuspeedster]

@AdiChat I am done with the changes.