Added voice command to migrate Cursorless snippet to community format (#2747)

2 fields in the Cursorless snippets are not available in the community
format

1. scopeTypes. To my knowledge the only use case is omitting the
`function` keyword when in a javascript class
2. excludeDescendantScopeTypes: Used in conjunction with `scopeTypes` to
include the function keyword when in a function inside a class.

scopeTypes and excludeDescendantScopeTypes I'm not to sure we want to
add to community. First of all they have a single use case and needing
two separate fields just to describe this behavior fields a bit verbose.
As well community doesn't have support for sending multiple snippets. 

I'm planning this as a follow up. 

Reference

https://github.com/cursorless-dev/cursorless/blob/57acd6c0fcc32e5df122ce09bb26bde5f09495ca/packages/common/src/types/snippet.types.ts#L4-L24

Fixes #2355

## Checklist

- [ ] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [x] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [/] I have not broken the cheatsheet

---------

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
Co-authored-by: Phil Cohen <phillip@phillip.io>

Author: 3 people

src/actions/generate_snippet.py

@@ -15,6 +15,13 @@
 
 @mod.action_class
 class Actions:
+    def private_cursorless_migrate_snippets():
+        """Migrate snippets from Cursorless to community format"""
+        actions.user.private_cursorless_run_rpc_command_no_wait(
+            "cursorless.migrateSnippets",
+            str(get_directory_path()),
+        )
+
     def private_cursorless_generate_snippet_action(target: CursorlessExplicitTarget):  # pyright: ignore [reportGeneralTypeIssues]
         """Generate a snippet from the given target"""
         actions.user.private_cursorless_command_no_wait(

src/cursorless.talon

@@ -47,3 +47,6 @@ tutorial resume: user.private_cursorless_tutorial_resume()
 tutorial (list | close): user.private_cursorless_tutorial_list()
 tutorial <number_small>:
     user.private_cursorless_tutorial_start_by_number(number_small)
+
+{user.cursorless_homophone} migrate snippets:
+    user.private_cursorless_migrate_snippets()