refactor(rpc): move server lifecycle into rpc library #43235

Job	Run time
Bootstrap with OCaml 4.02 (ubuntu-latest)	4m 13s
Bootstrap with OCaml 5.4 (macos-latest)	2m 24s
Bootstrap with OCaml 5.4 (ubuntu-latest)	1m 20s
Tests (Nix) (ubuntu-latest)	9m 2s
Bootstrap on Cygwin	3m 0s
Bootstrap with OxCaml (ubuntu-latest)	19m 15s
Bootstrap with OCaml 4.14 (ubuntu-latest)	1m 39s
Ensure no files with CRLF line endings are committed to the repo	7s
Format	1m 32s
Test that the utop dev tool can be built and run	13m 3s
Documentation	1m 1s
OxCaml Tests (Nix)	40m 42s
Rocq Tests	8m 43s
Create local opam switch (ubuntu-latest, 5)	5m 44s
Rocq Tests (native)	2m 53s
Wasm_of_ocaml Tests	7m 50s
Create local opam switch (macos-latest, 5)	8m 9s
Build microbenchmarks	2m 5s
OxCaml Tests (opam)	19m 40s
Build (opam) (ocaml-variants.5.6.0+trunk, ocaml-variants.5.6.0+trunk, ubuntu-latest)	1m 22s
Build (opam) (5.4.x, 5.4.x, ubuntu-latest, true)	10m 48s
Build (opam) (5.4.x, 5.4.x, macos-15-intel)	6m 23s
Build (opam) (ocaml-base-compiler.5.4.0,system-mingw, windows-latest, ocaml-compiler.5.4.0-system...	20m 8s
Build (opam) (5.4.x, 5.4.x, macos-latest, true)	19m 38s
Build (opam) (ocaml-compiler.5.4.0,system-msvc, windows-latest, ocaml-compiler.5.4.0-system-msvc,...	15m 18s
Build (opam) (ocaml-variants.4.14.2+options,ocaml-option-32bit, ocaml-variants.4.14.2-ocaml-optio...	42m 49s
Build (opam) (4.14.x, 4.14.x, macos-latest)	5m 58s
Build (opam) (4.14.x, 4.14.x, ubuntu-latest)	4m 30s
	4h 39m 16s

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