Use gradle to build advancement mod and Upload to CurseForge

[noeppi-noeppi]

Still a Draft. I hope @joblo2213 creates a github action for this. (I think it might be best to just pull request the action into this PR).

Details for the action:

A CurseForge token must be provided through the environment variable CURSE_AUTH. Run on java 16 (It should work with other java versions too, just to be safe) Execute ./gradlew curseforge inside advancements to publish it. A git repo must be present as the gradle script uses git rev-parse --short HEAD so we get unique versions on CurseForge.

Also we still need to discuss how to set up the curse project:

• There is some sort of token required. Don't ask me what exactly this is. Maybe @MelanX can help out there.
• I can set up the project but I don't really want to create that token and then hand it to you to add it as a secret to the repository. So you'd need to create a token yourself.
• You should write a comment on the CraftBlock project that the CraftBlockAdvancements project may use the name CraftBlock. Even if you create the CraftBlockAdvancements project yourself. (Yes I've heard about a case where CurseForge rejected the fabric port of a mod because too similar names even tough the fabric port was created by the same author that also created the original mod.)

[MelanX]

You can find the token in your curseforge account.

[noeppi-noeppi]

Oh and another thing: I don't know if it's possible to configure an action to only run if changes were made to a specific directory. If not, I'll need to find a way for this in gradle.