name all merlin pipelines

[awilliambauer]

Add names to all merlin pipelines that currently lack a name. This is helpful for implementing telemetry—Jane Street's internal ocaml-lsp telemetry uses these names. This PR should have no impact otherwise.

[coveralls]

Pull Request Test Coverage Report for Build 4224

Details

• 5 of 18 (27.78%) changed or added relevant lines in 8 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.001%) to 21.155%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
ocaml-lsp-server/src/custom_requests/req_wrapping_ast_node.ml	0	1	0.0%
ocaml-lsp-server/src/rename.ml	0	1	0.0%
ocaml-lsp-server/src/custom_requests/req_typed_holes.ml	0	2	0.0%
ocaml-lsp-server/src/document.ml	3	5	60.0%
ocaml-lsp-server/src/ocaml_lsp_server.ml	0	3	0.0%
ocaml-lsp-server/src/definition_query.ml	0	4	0.0%

Files with Coverage Reduction	New Missed Lines	%
ocaml-lsp-server/src/document.ml	1	60.0%

Totals
Change from base Build 4221:	0.001%
Covered Lines:	5138
Relevant Lines:	24287

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💛 - Coveralls