feat(workshop): add Steam Workshop downloads for Colony Survival

[dgibbs64]

Description

Extends the Workshop downloader (#5008, #5009, #5012, #5014) to Colony Survival. Its dedicated server doesn't download Workshop mods itself.

Unlike the other anonymous games, Colony Survival Workshop downloads need a Steam account that owns the game, as with Arma 3 and DayZ. The server itself still downloads anonymously. The default config gets an empty steamuser/steampass, so server updates stay anonymous unless a login is set for Workshop mods.

Install

• Mods install to gamedata/mods/<id>.
• The server only loads mods enabled in each world's gamedata/savegames/<world>/worldconfig.json. Without an entry it logs Not loading <mod>; no config entry for world.
• LinuxGSM uses jq to keep a {"ModName": <name>, "ModVersionLastKnown": "---", "Enabled": true} entry in ModConfigEntries for each Workshop mod, in workshopmods order. <name> is the name from the mod's modInfo.json, recorded in the mod's state file.
  • Entries are matched by ModName, because the server rewrites them (it drops extra fields and fills in ModVersionLastKnown).
  • The version the server records is kept, and entries for mods you added yourself are left alone.
  • Removing a mod removes its entry.
• This applies to every world in gamedata/savegames. If there's no world yet (the server has never started), LinuxGSM warns and skips this step.

Testing

Live test server, running this branch (tested with the final jq version), with a Steam account that owns Colony Survival (workshopmods="3816302400", Light Decor):

• Downloaded (with a Steam login) and installed to gamedata/mods/3816302400, with modname=Light Decor recorded.
• worldconfig.json got the entry, and the server log shows Loading mod Light Decor 1.0.0. The server then recorded "ModVersionLastKnown":"1.0.0".
• A second workshop-update reported no update and didn't restart the server.
• Clearing workshopmods removed the mod and set ModConfigEntries back to [].
• The server stayed healthy throughout and was restored afterwards.
• Locally, the worldconfig.json editing:
  • A hand-added entry is kept.
  • Order follows workshopmods.
  • The server's recorded version is preserved.
  • Removed mods' entries are dropped.
• shellcheck and prettier pass.

Relates to #3514.

Type of change

• Bug fix (a change which fixes an issue).
• New feature (a change which adds functionality).
• New Server (new server added).
• Refactor (restructures existing code).
• Comment update (typo, spelling, explanation, examples, etc).

Checklist

• This pull request links to an issue.
• This pull request uses the develop branch as its base.
• This pull request subject follows the Conventional Commits standard.
• This code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have checked that this code is commented where required.
• I have provided a detailed enough description of this PR.
• I have checked if documentation needs updating.

Documentation

Covered in GameServerManagers/LinuxGSM-Docs#132.

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