Fix build: docstrings, Fmt.str parens, OCI test split, stray syntax
- ocaml-cose/lib/cose.mli: add blank lines between val groups (warning 50)
- ocaml-mal/lib/mal.mli: same fix
- ocaml-rice/lib/rice.ml: remove stray ) after Fmt.invalid_arg
- ocaml-lfsr: remove stray ) in lib and test
- ocaml-idc: remove stray ) after Fmt.invalid_arg
- ocaml-aem, ocaml-adm, ocaml-opm, ocaml-tdm, ocaml-odm: fix Fmt.str
paren placement (args outside parens)
- ocaml-xmlt: fix bench/fuzz Fmt.str parens
- ocaml-oci/test/interop/registry: split into test_index.ml,
test_manifest.ml, test_config.ml with test.ml runner
- ocaml-gpt: exclude c/ dir (EverParse UINT64 pending)
- fmt dependency added to 11 coding packages