chore: Remove build artifacts from git tracking

- Remove obj/ folders (build outputs) from version control
- Remove .vs/ folder (Visual Studio cache files) from version control
- These are already covered by .gitignore but were previously tracked

This prevents build artifacts from cluttering commits and causing
unnecessary merge conflicts. The .gitignore already properly excludes:
- [Oo]bj/ (line 31)
- .vs/ (line 37)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: hemanandr