Added autocomplete support for the graphics module. This has several …

…aspects:

 - We need to load graphics.py to process it so I use webpack's support for loading text files at import-time.
 - Then we extract types from this file (added to the file in this commit) in the format TigerPython expects.

 And that's all we need to do.  Then we have support in the autocomplete for the graphics types.

package.json

@@ -48,6 +48,7 @@
         "object-hash": "^2.0.3",
         "pinia": "^2.0.32",
         "python-shell": "^2.0.3",
+        "raw-loader": "^4.0.2",
         "remove-files-webpack-plugin": "^1.5.0",
         "sortablejs": "^1.15.0",
         "splitpanes": "^2.4.1",