fix: fix and improve ci workflow setup

.github/workflows/pr.yml

@@ -0,0 +1,59 @@
+name: Checks
+on: [push]
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [16]
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "yarn"
+      - name: Install packages
+        run: yarn install --frozen-lockfile
+      - name: Lint
+        run: yarn lint
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [16]
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "yarn"
+      - name: Install packages
+        run: yarn install --frozen-lockfile
+      - name: Build
+        run: yarn build
+      - name: Test
+        run: yarn test
+  solhint:
+    name: Solhint
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [16]
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+          cache: "yarn"
+      - name: Install packages
+        run: yarn install --frozen-lockfile
+      - name: Solhint
+        run: yarn lint-contracts