TRX merger

[rr-]

Checklist

• [x] I have read the coding conventions
• [x] I have added a changelog entry about what my pull request accomplishes, or it is an internal change

Description

Merges TRX and libtrx into a single repository. Doesn't preserve the commit history, which we regarded as an acceptable loss.

Remaining to be done after the merge:

• Rename the repository
• Adjust GitHub labels
• Adjust GitHub milestones
• Rename git tags
• Adjust GitHub releases to use the new tags
• Transfer TR2X issues
• Correct TR2X ticket numbers to the transferred ones in the changelog
• Fix all links LostArtefacts/TR1X and LostArtefacts/TR2X links in the docs

[rr-]

Looks great and works great! Amazing. I just had to delete my old Docker containers and run a just clean.

Only minor things I noticed:

1. just alone only builds TR1X. I guess that's an ok default to have?

Thanks, changed this to also build TR2.

2. docs/tr1/CONTRIBUTING.md and docs/tr2/CONTRIBUTING.md should probably be slightly updated to explicitly mention just-tr1-... and just-tr2-....

Actually these two documents got merged to docs/CONTRIBUTING.md since they were mostly identical.

3. I don't fully understand how just lint etc work now. Does the command lint both TR1X and TR2X? The CONTRIBUTING.md could also maybe reflect this answer too.

Correct – it formats all the code. Similarly autogenerated code is updated on each pre-commit trigger.