Add `Template` query library #3144

Job	Run time
Run release tests	9s
Prepare supported CodeQL environment matrix	4s
Run Guideline Recategorization tests	9s
Run analysis report tests (2.19.4, codeql-cli/v2.19.4, codeql-bundle-v2.19.4)	4m 12s
	4m 34s

Provide feedback