CI: add a prettier GitHub action to format code automatically (#988)

* CI: add a prettier GitHub action to format code automatically

* improve GitHub Action config and format some files

* Apply formatting changes

* CI: make the prettier action a standalone action

* Apply formatting changes

* CI: add push as new trigger event

Co-authored-by: Mark-Fenng <Mark-Fenng@users.noreply.github.com>

.release-it.json

@@ -12,4 +12,4 @@
     "release": true,
     "releaseName": "Release ${version}"
   }
-}
+}