drawterm Windows/MSVC fork

This fork tracks 9front drawterm with a small set of Windows-focused improvements.

Changes from upstream

• Builds on Windows using Microsoft Visual C via NMakefile.msvc.
  • Upstream 9front drawterm's Windows build path uses MinGW/Cygwin.
• Supports and documents building native Windows binaries from Ubuntu under WSL using MinGW-w64.
  • Upstream documents its MinGW build using Cygwin.
• Supports no-GUI command execution from PowerShell or cmd with -G -c <cmd>.
  • Output is written to the invoking console, and the shell waits for drawterm to exit before returning to the prompt.

After installation:

drawterm -h cpu.example -a auth.example -u glenda -G -c 'lc /'

More information

• Upstream/9front README: README
• Automated Windows install/update and manual WSL/MinGW-w64 build notes: README.mingw-wsl.md
• MSVC build notes: README.msvc