Active user beacon

[AlexIIL]

This implements the active user beacon (RFC 81), also in issue #324.

This needs to have a proper link to the blog before this should be merged?

This differs slightly from the RFC: all checks are performed on the main thread (steps 1 and 2 in the RFC) and only then does it create a thread to send the request (step 3).

[AlexIIL]

This includes 2 new APIs in org.quiltmc.loader.api.QuiltLoader: getGlobalCacheDir and getGlobalConfigDir, which reference different places depending on the platform:

• %LOCALAPPDATA%\QuiltMC\QuiltLoaderAndMods on windows
• ~/Library/Application Support/org.quiltmc.QuiltLoaderAndMods on mac os
• $XDG_CONFIG_HOME/quilt_loader_and_mods on linux.

The exact paths are slightly more complex though, please see https://github.com/QuiltMC/quilt-loader/pull/326/files#diff-fad88a499d350f39f142ae7f01bb55a088e2d5112b9a645461bab17e4f7a099b for the actual implementation.

[AlexIIL]

Moving back to draft until I actually test this on MacOS and windows.

[AlexIIL]

This works fine on Mac OS.

[AlexIIL]

And this works on windows! So this is nearly good to go, except for a blog post link. (Which can technically be added later, when the blog is posted.)

[AlexIIL]

And this works on windows! So this is nearly good to go, except for a blog post link. (Which can technically be added later, when the blog is posted.)

[ix0rai]

@AlexIIL blog post is waiting on your review!

[AlexIIL]

Sorry for the delay - I've left an approving review.