Switch core-api back to GAMELIBRARY, remove disabled main buildscript #67

Job	Run time
Get Variables	4s
datagen / Data Generators	6m 6s
tests / Run Game Tests	2m 14s
publish / Publish Code as Github Package - 7.0.5.0-nightly	1m 23s
Discord Announcement / Get Latest Package Info	11s
Discord Announcement / Discord Announcement	5s
	10m 3s

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