Vim smorgasbord (#12222)

Release Notes:

- vim: Added `]d/[d` for go to prev/next diagnostic
- vim: Added `]c/[c` to go to prev/next git change (`:diff` and
`:revert` show the diff and revert it)
- vim: Added `g cmd-d` for go to implementation

assets/keymaps/vim.json

@@ -155,6 +155,7 @@
       "g shift-t": "pane::ActivatePrevItem",
       "g d": "editor::GoToDefinition",
       "g shift-d": "editor::GoToTypeDefinition",
+      "g cmd-d": "editor::GoToImplementation",
       "g x": "editor::OpenUrl",
       "g n": "vim::SelectNextMatch",
       "g shift-n": "vim::SelectPreviousMatch",
@@ -384,7 +385,11 @@
       "ctrl-pageup": "pane::ActivatePrevItem",
       // tree-sitter related commands
       "[ x": "editor::SelectLargerSyntaxNode",
-      "] x": "editor::SelectSmallerSyntaxNode"
+      "] x": "editor::SelectSmallerSyntaxNode",
+      "] d": "editor::GoToDiagnostic",
+      "[ d": "editor::GoToPrevDiagnostic",
+      "] c": "editor::GoToHunk",
+      "[ c": "editor::GoToPrevHunk"
     }
   },
   {