Add Bun support #21678

Job	Run time
ubuntu-20.04 (chromium tip-of-tree)	12m 48s
ubuntu-22.04 (chromium - Node.js 18)	11m 57s
ubuntu-22.04 (firefox - Node.js 18)	24m 58s
Installation Test ubuntu-latest	11m 7s
ubuntu-22.04 (webkit - Node.js 18)	17m 26s
Installation Test macos-latest	15m 43s
ubuntu-22.04 (chromium - Node.js 16)	12m 4s
Installation Test windows-latest	18m 19s
ubuntu-22.04 (chromium - Node.js 20)	12m 7s
VSCode Extension	7m 6s
Test Runner (ubuntu-latest, 18, 1, 2)	12m 29s
Test Runner (ubuntu-latest, 18, 2, 2)	14m 11s
Web Components	1m 49s
Test Runner (windows-latest, 18, 1, 2)	18m 3s
Test Runner (windows-latest, 18, 2, 2)	21m 49s
Test Runner (macos-latest, 18, 1, 2)	16m 26s
Test Runner (macos-latest, 18, 2, 2)	19m 29s
Test Runner (ubuntu-latest, 16, 1, 2)	11m 53s
Test Runner (ubuntu-latest, 16, 2, 2)	14m 3s
Test Runner (ubuntu-latest, 20, 1, 2)	11m 54s
Test Runner (ubuntu-latest, 20, 2, 2)	13m 46s
	4h 59m 27s

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