Debugging configuration for VSCode
New features:
- VSCode: Add GDB debugging configuration
- VSCode: Add Python debugging configuration
- VSCode: Document debugging and add demos
Improvements:
- Ignore config keys starting with underscore (can be used as comments)
- Move tips on SSH into ssh.md
Internal changes:
- Use simpler string.Template for string interpolation
- Cosmetic change in argument handling in build-env
- Add media directory for LFS storage