devops: add DevContainer config #2614

Job	Run time
Java_21 (chromium)	4m 27s
stable (ubuntu-latest, chrome)	5m 21s
Java_21 (firefox)	9m 30s
stable (windows-latest, chrome)	8m 42s
dev (ubuntu-latest, chromium)	4m 11s
Java_21 (webkit)	7m 15s
dev (ubuntu-latest, firefox)	9m 26s
stable (macos-latest, chrome)	30m 22s
dev (ubuntu-latest, webkit)	30m 13s
stable (windows-latest, msedge)	24m 38s
stable (macos-latest, msedge)	30m 17s
dev (windows-latest, chromium)	6m 28s
dev (windows-latest, firefox)	12m 55s
dev (windows-latest, webkit)	8m 52s
dev (macos-latest, chromium)	10m 44s
dev (macos-latest, firefox)	15m 21s
dev (macos-latest, webkit)	13m 52s
	3h 52m 34s

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