chore: add Greptile and GitGuardian configs #177

Job	Run time
Lint	19s
Security Scan	7s
validate / Validate Components	10s
test (ubuntu-latest, 22.x) / Test	17s
test (ubuntu-latest, 20.x) / Test	14s
test (macos-latest, 20.x) / Test	17s
test (macos-latest, 22.x) / Test	13s
	1m 37s

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