Refactor offline bits out of `Features` class and use for CCR #11433

Job	Run time
analyze-other (actions)	52s
check-codeql-versions	49s
analyze-other (python)	58s
analyze-javascript (ubuntu-22.04, linked)	4m 37s
analyze-javascript (windows-2022)	6m 11s
analyze-javascript (ubuntu-24.04)	4m 21s
analyze-javascript (windows-2025)	7m 17s
analyze-javascript (windows-2025, linked)	5m 53s
analyze-javascript (macos-14, linked)	8m 4s
analyze-javascript (macos-14)	11m 1s
analyze-javascript (macos-15)	13m 0s
analyze-javascript (macos-15, linked)	9m 10s
analyze-javascript (windows-2022, linked)	5m 23s
analyze-javascript (ubuntu-22.04)	4m 34s
analyze-javascript (ubuntu-24.04, linked)	4m 17s
	1h 26m 27s

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