Static Asset Management (#9292)

* Caddyfile: Redirect asset requests

- Ensure the static asset files are served by the proxy
- Reduce gunicorn / python load
- Significant server performance increase

* Allow CORS requests to 'assets' path

* Update static assets path for vite build

* Remove RedirectAssetView

* Specify relative base path

Ref: https://vite.dev/guide/build.html#relative-base

* Revert settings.py

* Revert caddyfile

* Remove defunct unit test

* Add timeout to test

src/frontend/vite.config.ts

@@ -48,6 +48,7 @@ export default defineConfig({
       uploadToken: process.env.CODECOV_TOKEN
     })
   ],
+  base: '',
   build: {
     manifest: true,
     outDir: '../../src/backend/InvenTree/web/static/web',