Log Message:
(cad/ghdl) Updated 2.0 to 3.0

## [2023-03-08] 3.0.0

[Milestone v3.0 筐咯(https://github.com/ghdl/ghdl/milestone/11?closed=1)

- Handle IEEE operators for static expressions.
- Improved support of VHDL 2008 (still!).
- Start support of VHDL 2019 (`--std=19`).
- pyGHDL:
  - Experimental support to preserve VHDL code comments for documentation
	  extraction.
  - Experimental packaging with a platform-specific shared library for
	  standalone installation using PIP.
  - DOM: dependency graphs, instantiation graphs (design hierarchy),
	  file dependencies (compile order).
- Pre-releases are published to GitHub Releases and assets are uploaded to
  pre-releases and releases.