Renderers are now packages, not features. (#387)

* feat: use synchronous router design

* feat: function to get router out of dom

* chore: restructure workspace to use renderers as packages, not features

.github/workflows/macos.yml

@@ -40,4 +40,4 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --features "desktop, ssr, router"
+          args: --all --tests