WIP: builder interface for constructing servers, rework server startup code paths #2973

Job	Run time
check-style	12s
build-and-test (ubuntu-22.04, all)	3m 10s
clippy-lint	35s
build-and-test (ubuntu-22.04, default)	2m 50s
build-and-test (windows-2022, all)	8m 14s
build-and-test (windows-2022, default)	7m 30s
build-and-test (macos-14, all)	2m 25s
build-and-test (macos-14, default)	2m 21s
	27m 17s

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