[KATC] Update config schema, including overlays #5440

Job	Run time
launcher (ubuntu-20.04)	4m 31s
launcher (macos-12)	8m 59s
package_builder (ubuntu-20.04)	1m 7s
launcher (windows-latest)	10m 19s
package_builder (macos-12)	1m 14s
package_builder (windows-latest)	3m 21s
Version Baseline	6s
Exec Test (ubuntu-20.04)	9s
Exec Test (ubuntu-22.04)	5s
Exec Test (macos-12)	18s
Exec Test (macos-13)	21s
Exec Test (macos-14)	28s
Exec Test (windows-2019)	14s
Exec Test (windows-2022)	16s
ci_mergeable	1s
Store Artifacts (linux)	9s
Store Artifacts (macos)	12s
Store Artifacts (windows)	9s
	31m 59s

Provide feedback