feat: add getCurrentPackageManager #2759

Job	Run time
Flow	55s
Lint	1m 3s
Benchmarks	20m 0s
Integration tests (ubuntu-latest, Node 18)	6m 43s
Integration tests (macos-latest, Node 18)	18m 25s
Unit tests (ubuntu-latest, Node 18)	3m 2s
Integration tests (windows-latest, Node 18)	20m 55s
Unit tests (macos-latest, Node 18)	9m 58s
Integration tests (ubuntu-latest, Node 20)	6m 24s
Integration tests (macos-latest, Node 20)	16m 31s
Unit tests (windows-latest, Node 18)	10m 23s
Integration tests (windows-latest, Node 20)	22m 9s
Unit tests (ubuntu-latest, Node 20)	2m 47s
Unit tests (macos-latest, Node 20)	9m 22s
Unit tests (windows-latest, Node 20)	7m 29s
Build REPL	5m 45s
	2h 41m 51s

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