[KATC] Update config schema, including overlays (#1772) #5443

Job	Run time
package_builder (ubuntu-20.04)	1m 4s
launcher (ubuntu-20.04)	6m 52s
package_builder (macos-12)	1m 24s
launcher (macos-12)	7m 47s
package_builder (windows-latest)	4m 35s
launcher (windows-latest)	8m 59s
Version Baseline	6s
Exec Test (ubuntu-20.04)	5s
Exec Test (ubuntu-22.04)	8s
Exec Test (macos-12)	20s
Exec Test (macos-13)	22s
Exec Test (macos-14)	26s
Exec Test (windows-2019)	19s
Exec Test (windows-2022)	15s
ci_mergeable	1s
Store Artifacts (linux)	10s
Store Artifacts (macos)	17s
Store Artifacts (windows)	6s
	33m 16s

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