Add `codeql-action/start-proxy` #5217

Job	Run time
Packaging: Action input (ubuntu-latest, linked)	1m 43s
Packaging: Action input (macos-latest, linked)	1m 43s
Packaging: Action input (windows-latest, linked)	5m 24s
Packaging: Action input (ubuntu-latest, default)	1m 28s
Packaging: Action input (macos-latest, default)	1m 40s
Packaging: Action input (windows-latest, default)	2m 54s
Packaging: Action input (ubuntu-latest, nightly-latest)	1m 50s
Packaging: Action input (macos-latest, nightly-latest)	1m 48s
Packaging: Action input (windows-latest, nightly-latest)	3m 28s
	21m 58s

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