Configure lsp custom options during install

[ericvergnaud]

Each transpiler may require options that remorph doesn't know about, but need to be configured via the CLI before
calling the transpiler.

This PR implements a mechanism for doing so, as follows:

• the TranspileConfig structure now comprises a transpiler_options entry that can hold key/value pairs
• the transpiler config.yml now comprises an optional options section which describes CLI actions for populating the transpiler_options above. 4 actions are supported: FORCE, CONFIRM, QUESTION and CHOICE.
• the CLI uses the above section to interact with the user and gather configuration options
• the LSP client passes these options to the server as part of initialization

Fixes #1478

[github-actions]

✅ 13/13 passed, 1 skipped, 15s total

_{Running from acceptance #276}