Add host-mediated GitHub API requests for extensions #1085

Job	Run time
Detect changed paths	6s
Analyze (java-kotlin)	2m 45s
Analyze (javascript-typescript)	1m 30s
Skip (python)	12s
Skip (csharp)	10s
Skip (go)	11s
Analyze (rust)	1m 58s
Skip (actions)	10s
	7m 2s

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