Site reorg: Remove site/ subpath (#306)

Unfortunately, for proper package pathing, need to remove the `site/`
subpath. This includes:
- Moving everything back into root
- Adding a `copy-site.sh` script to copy resources into `mkdocs/site/`
before building the site with mkdocs.
- Also update examples to ensure all are loading the local sw.js / ui.js
- Consolidate examples in `docs/examples`
- Consolidate assets under src/assets/
- Move `favicons` to root
- Reformat and relint
- Tests: update playwright tests to use mkdocs output, add test for
embed in docs
- bump to 2.0.0-beta.2

.github/workflows/site-publish.yaml

@@ -26,11 +26,8 @@ jobs:
       - name: Yarn Install
         run: yarn install --frozen-lockfile
 
-      - name: Yarn Build
-        run: yarn build
-
       - uses: actions/setup-python@v4
         with:
           python-version: 3.x
-      - run: pip install mkdocs-macros-plugin mkdocs-redirects mkdocs-material
-      - run: cd mkdocs && mkdocs gh-deploy --force
+      - run: pip install -r mkdocs/requirements.txt
+      - run: yarn run publish-docs