Create coverage.yml for running forge coverage

Author: amiecorso

.github/workflows/coverage.yml

@@ -0,0 +1,35 @@
+name: Coverage
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  FOUNDRY_PROFILE: ci
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
+
+      - name: Run coverage
+        run: |
+          forge coverage --report lcov
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./lcov.info
+          fail_ci_if_error: true