Add host-mediated GitHub API requests for extensions #1084

Job	Run time
Detect changed paths	5s
Analyze (javascript-typescript)	1m 6s
Analyze (java-kotlin)	2m 43s
Analyze (rust)	2m 1s
Skip (actions)	13s
Skip (python)	12s
Skip (csharp)	10s
Skip (go)	13s
	6m 43s

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