List of repos where the action could be used

[tgorochowik]

We need to compile a list of repositories that contain SystemVerilog or Verilog (even simple test cases) where we could enable the Verible actions.

Let me start with

• UHDM integration tests
• sv-tests
• ibex (already integrated)
• opentitan (waiting for input from the authors, will be created shortly)

Please comment with suggestions of other repositories CC @hzeller @mkurc-ant @kgugala