Draft a media repository publish system

[Fohlen]

We will want to have something like npm publish for media repositories. For the interfaces we use the npm registry because it's JavaScript/HTML/CSS, which is just fine. For larger media repositories, this won't work of course

Media repositories should be

• either a tar ball or a SCM (Git), preferably a SCM

Each media repository could (in the future) contain a repository.json with meta-data about the repository. However, to publish and find media repositories we will need to draft a system

• we could use NPM to use repository.json only, however this is probably a bad missuse of NPM
• we could modify NPM (custom brand) to host only repository.json files and provide a custom registry for packages at inexor.org
• we could use the distributed network from #197 and add another API for the repositories (probably best, however using Karma for media repositories doesn't really make sense 😢
• we could host a list of repositories on GitHub (probably bad)
• (...) probably a couple more ideas to add here

[aschaeffer]

My idea is to consequently use git but make it simple.

Use Cases

• [x] 1. Use local media repositories (fs / git)
• [x] 2. Use remote media repositories (git)
• [ ] 3. Act as provider for media repositories
• [ ] 4. Resolve providers for media repositories
• [ ] 5. Create media repository
• [ ] 6. Create, modify, delete media items

3. Act as provider for media repositories

Basically everyone who can host git repositories can also host media repositories. There are a lot of options you have:

• Use third party services: GitHub, BitBucket, GitLab, ...
• Host your own git repository management software: GitBlit, ...
• Integrate a git repository server into Inexor Flex:
  • Add an option to configure if a repository is public available
  • Reindex media repository on certain events: onCommit

4. Resolve providers for media repositories

• Request the list of repositories from other known Flex via REST / websockets / GraphQL.

5. Create media repository

1. Create repository folder
2. Initialize git on this folder
3. Create a repository.toml / .json file
4. Create a folder structure for textures, maps, ...

6. Create, modify, delete media items

These operations results in git commit, git push or even a pull request on GitHub.