Adds new CodeLens visibility & location settings

Adds new command to toggle CodeLens on and off when `gitlens.codeLens.visibility` is set to `ondemand`

src/commands.ts

@@ -154,4 +154,14 @@ export class ToggleBlameCommand extends EditorCommand {
             .catch(ex => console.error('[GitLens.ToggleBlameCommand]', 'getBlameForLine', ex))
             .then(blame => this.blameController.toggleBlame(editor, blame && blame.commit.sha));
     }
+}
+
+export class ToggleCodeLensCommand extends EditorCommand {
+    constructor(private git: GitProvider) {
+        super(Commands.ToggleCodeLens);
+    }
+
+    execute(editor: TextEditor, edit: TextEditorEdit) {
+        return this.git.toggleCodeLens(editor);
+    }
 }