Document Existing GameTest API

[BartTerpstra1]

document the api because the current documentation is a post-it note with most of the words missing.

mojang dev explaining system:
https://www.youtube.com/watch?v=vXaWOJTCYNg
original PR exposing feature:
FabricMC/fabric#1622
very helpful /s wiki page:
https://fabricmc.net/wiki/tutorial:gametest
forge javadoc:
https://nekoyue.github.io/ForgeJavaDocs-NG/javadoc/1.18.1/net/minecraft/gametest/framework/package-summary.html
fabric javadoc:
https://maven.fabricmc.net/docs/fabric-api-0.45.0+1.18/net/fabricmc/fabric/api/gametest/v1/package-summary.html

you can do this by adding javadoc in the QSL module we are trying to develop, writing a guide in the docs here and adding java doc to quilt-mappings, the thing that adds javadoc to minecraft decompiled source.

[BartTerpstra1]

checking minecraft mappings of net.minecraft.test, it seems only the annotations have javadocs.

[BartTerpstra1]

• add proper javadoc to quilt-mappings for net.minecraft.test by reverse engineering what they do
• get someone to proof read it and pull it
• make a second copy here in a more "how to use" oriented way

[BartTerpstra1]

• AfterBatch
• BeforeBatch
• CustomTestProvider
• FailureLoggingTestCompletionListener
• GameTest
• GameTestBatch
• GameTestException
• GameTestState
• NotEnoughSuccessesError
• PositionedException
• StructureTestListener
• StructureTestUtil
• TeamCityTestCompletionListener
• TestCompletionListener
• TestContext
• TestFailureLogger
• TestFunction
• TestFunctions
• TestListener
• TestManager
• TestRunner
• TestServer
• TestSet
• TestUtil
• TickLimitExceededException
• TimedTask
• TimedTaskRunner
• XmlReportingTestCompletionListener

[BartTerpstra1]

• Test command 💀