Add parameters for basic handling of mods

[sdsznsk]

[veteran29]

LGTM but I don't know Python so leaving the approval to someone else 😁

[BrettMayson]

Could allow JSON and the IDs in the env, load the json first then append from env

[sdsznsk]

Sounds good, will do

[Dahlgren]

Name is only for human readability and not used by the server.

I suggest to use only one environment variable to specify mods, GAME_MODS, which accepts either any version or specific version.

1. Mods with any versions, GAME_MODS=5965770215E93269,59664C0CB36501CD
2. Mods with specific versions, GAME_MODS=5965770215E93269=1.0.6,59664C0CB36501CD=0.3.0
3. Mods with any and specific versions, GAME_MODS=5965770215E93269,59664C0CB36501CD=0.3.0

[Dahlgren]

Workshop should use a volume to avoid redownload when container is recreated, for example VOLUME /reforger/workshop

To use the volume and separate workshop folder start the game with argument -addonDownloadDir /reforger/workshop

[sdsznsk]

While I do agree with an option for specifying mod version in the GAME_MODS_IDS_LIST, and keeping them on a dedicated volume, I don't think removing an option to provide mods via a file is a good idea tbh. Managing dozens of mods only via one long ENV would be quite a pain. Also it allows potential outside mod managers to just generate file instead of compiling a long ENV string. Your call tho

[Dahlgren]

Would be good with an example environment variable in README for how to load mods. The Dockefile has no example so one has to read through the launch.py code.

[jonpas]

@Dahlgren re-review please.

[sdsznsk]

Lint failed though, I will take a look in an hr or two 👀