Major mode to navigate and edit VHDL files with tree-sitter.

Provides tree-sitter based implementations for the following features:
- Syntax highlighting
- Indentation
- `imenu'
- `which-func'
- Navigation functions
- Completion at point


Contributions:
  This major mode is still under active development!
  Check contributing guidelines:
    - https://github.com/gmlarumbe/vhdl-ext#contributing

  For some highlight queries examples, check the link below:
   - https://github.com/alemuller/tree-sitter-vhdl/blob/main/queries/highlights.scm