chore(makefile): add platform-aware build, cross-compilation, and uti…

[ani1609]

Description

Added Makefile enhancements for improved build system and developer convenience.

• Added platform-aware build target for current OS/Arch
• Added build-all target for cross-compilation
• Added clean and help targets
• Ensures consistent binary naming in bin/ directory

Fixes #84

How Has This Been Tested?

Test cases:

• make build creates binary for current platform in bin/ directory
• make build-all successfully cross-compiles for all target platforms
• make clean removes all build artifacts from bin/ directory
• make help displays all available targets with descriptions

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit test cases.

Does this PR introduce a breaking change?

[ani1609]

ready for review when you have a moment @narmidm