Ruby scope migration (#2343)

## Checklist

- [/] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [/] 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

Author: AndreasArvidsson

packages/cursorless-engine/src/languages/ruby.ts

@@ -160,7 +160,6 @@ const nodeMatchers: Partial<
       1,
     ),
   ),
-  functionName: ["method[name]", "singleton_method[name]"],
   anonymousFunction: cascadingMatcher(
     patternMatcher("lambda", "do_block"),
     matcher(blockFinder),
@@ -173,13 +172,6 @@ const nodeMatchers: Partial<
     "argument_list",
   ),
   collectionKey: trailingMatcher(["pair[key]"], [":"]),
-  name: [
-    "assignment[left]",
-    "operator_assignment[left]",
-    "class[name]",
-    "method[name]",
-    "singleton_method[name]",
-  ],
   value: leadingMatcher(
     [
       "pair[value]",

queries/ruby.scm

@@ -36,3 +36,21 @@
   (string_content)
   (heredoc_content)
 ] @textFragment
+
+(class
+  name: (_) @name
+) @_.domain
+
+(method
+  name: (_) @functionName @name
+) @_.domain
+(singleton_method
+  name: (_) @functionName @name
+) @_.domain
+
+(assignment
+  left: (_) @name
+) @_.domain
+(operator_assignment
+  left: (_) @name
+) @_.domain