Implement Indent & Outdent as operators (#12430)

Release Notes:

- Fixes [#9697](https://github.com/zed-industries/zed/issues/9697).

Implements `>` and `<` with motions and text objects.
Works with repeat action `.`

crates/vim/src/vim.rs

@@ -534,7 +534,11 @@ impl Vim {
     fn push_operator(&mut self, operator: Operator, cx: &mut WindowContext) {
         if matches!(
             operator,
-            Operator::Change | Operator::Delete | Operator::Replace
+            Operator::Change
+                | Operator::Delete
+                | Operator::Replace
+                | Operator::Indent
+                | Operator::Outdent
         ) {
             self.start_recording(cx)
         };