[KATC] Update config schema, including overlays #5441

Job	Run time
package_builder (ubuntu-20.04)	1m 5s
launcher (ubuntu-20.04)	4m 31s
package_builder (macos-12)	1m 25s
package_builder (windows-latest)	3m 55s
launcher (macos-12)	9m 5s
launcher (windows-latest)	10m 40s
Version Baseline	3s
Exec Test (ubuntu-20.04)	8s
Exec Test (ubuntu-22.04)	5s
Exec Test (macos-12)	19s
Exec Test (macos-13)	17s
Exec Test (macos-14)	31s
Exec Test (windows-2019)	14s
Exec Test (windows-2022)	14s
ci_mergeable	1s
Store Artifacts (linux)	7s
Store Artifacts (macos)	14s
Store Artifacts (windows)	10s
	33m 4s

Provide feedback