Feature/monorepo #95 (#105)

Move repository into a monorepo with turborepo and pnpm.
This is a big change in the way the code is organized, used and deployed.

.github/workflows/checks.yml

@@ -10,6 +10,10 @@ jobs:
         node: ["16.x"]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
+    env:
+      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
+      TURBO_TEAM: ${{ secrets.TURBO_TEAM }}
+
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
@@ -19,11 +23,14 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
-      - name: Install deps and build (with cache)
-        uses: bahmutov/npm-install@v1
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2.2.2
+
+      - name: Install dependencies
+        run: pnpm install
 
       - name: Lint
-        run: yarn lint
+        run: pnpm lint
 
       - name: Build
-        run: yarn build
+        run: pnpm build