build: add .vimrc to .gitignore (#32253)

Vim users may need to create a custom `.vimrc` when developing on the
Angular project. The primary use case of this is setting the
clang-format executable to `node_modules/.bin/clang-format`.

PR Close #32253

.gitignore

@@ -20,6 +20,8 @@ pubspec.lock
 *.swo
 modules/.settings
 modules/.vscode
+.vimrc
+.nvimrc
 
 # Don't check in secret files
 *secret.js