refactor(rpc): move server lifecycle into rpc library #43225

Job	Run time
Ensure no files with CRLF line endings are committed to the repo	8s
Format	1m 38s
Bootstrap with OCaml 5.4 (macos-latest)	2m 53s
Bootstrap with OxCaml (ubuntu-latest)	5m 2s
Tests (Nix) (ubuntu-latest)	5m 9s
Test that the utop dev tool can be built and run	5m 2s
Bootstrap with OCaml 5.4 (ubuntu-latest)	1m 19s
Bootstrap on Cygwin	3m 4s
Documentation	58s
Bootstrap with OCaml 4.02 (ubuntu-latest)	4m 34s
Bootstrap with OCaml 4.14 (ubuntu-latest)	1m 38s
Rocq Tests	2m 10s
OxCaml Tests (opam)	2m 11s
Rocq Tests (native)	2m 10s
OxCaml Tests (Nix)	2m 10s
Wasm_of_ocaml Tests	1m 50s
Create local opam switch (macos-latest, 5)	1m 10s
Build microbenchmarks	2m 5s
Create local opam switch (ubuntu-latest, 5)	2m 10s
Build (opam)	1s
	47m 22s

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