Add lhl2617/VSLilyPond suite

[lbssousa]

• I have read the note above about PRs contributing or fixing extensions
• I have tried reaching out to the extension maintainers about publishing this extension to Open VSX (if not, please create an issue in the extension's repo using this template).
• This extension has an OSI-approved OSS license (we don't accept proprietary extensions in this repository)

Description

This PR adds https://github.com/lhl2617/VSLilyPond suite to the extension marketplace

[filiptronicek]

Hi there @lbssousa. Could you please look into the logs of the failed CI and convert this to a draft in the meantime if this takes some more effort to set up?

[lbssousa]

I'm trying to debug CI errors. Reading the logs, I've found it's failing at this point, when trying to bundle python-ly for extension VSLilyPond-formatter:

$ staticx /tmp/repository/main/ly/dist-linux/python-ly /tmp/repository/main/ly/dist-linux/python-ly.static
Traceback (most recent call last):
  File "ly/build.py", line 71, in <module>
    cmd(f"staticx {bin_path} {bin_path}.static")
  File "ly/build.py", line 31, in cmd
    raise Exception(
Exception: Command 'staticx /tmp/repository/main/ly/dist-linux/python-ly /tmp/repository/main/ly/dist-linux/python-ly.static' exited with code 2, expected 0