1.29 support (Graph API)

[roydejong]

This PR adds support for Beat Saber 1.29 by targeting GameLift API overrides rather than master server overrides, which are now no longer supported:

• Adds setting and API to override graphUrl from the game's network config with a custom URL
• Removes MasterServerEndPoint and DisableGameLift patches; rather, if we are overriding Graph URL, we now always force GameLift use
• Bumps MpCore version to 1.3.0 and target Beat Saber 1.29.0

Cross-dependent related PRs

• https://github.com/BeatTogether/BeatTogether/pull/42
• https://github.com/BeatTogether/BeatTogether.MasterServer/pull/63
• https://github.com/BeatTogether/BeatTogether.DedicatedServer/pull/128

[rcelyte]

I was kind of hoping we could fuse the graph URL and status URL into one web host to simplify configuration 😕 (Official uses a single domain for both as well)

[roydejong]

I was kind of hoping we could fuse the graph URL and status URL into one web host to simplify configuration 😕 (Official uses a single domain for both as well)

I personally think that this adds a bit more flexibility in how server operators want to handle this.

In BT's case, for example, the status API and Graph API will most likely end up on completely different ports, so some granularity in defining that is desirable.

Nothing here is final though - this is just my proposal and is all open to discussion for sure

[rcelyte]

Appears to work perfectly on 1.29.0 :+1: (testing with UseCustomApiServer("https://master.battletrains.org", "https://master.battletrains.org");)

[Kevman95]

Merging ;)