Add codecov upload workflow

Author: mattcreaser

.github/workflows/codecov_code_coverage.yml

@@ -0,0 +1,32 @@
+name: Run code coverage
+
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+    branches:
+      - 'main'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+
+      - name: Setup Java
+        uses: actions/setup-java@cd89f46ac9d01407894225f350157564c9c7cee2 # v3
+        with:
+          java-version: '17'
+          distribution: 'corretto'
+
+      - name: Run test and generate kover report
+        run: ./gradlew koverXmlReport
+
+      - name: Upload Test Report
+        uses: codecov/codecov-action@v5
+        with:
+          name: report
+          files: build/reports/kover/report.xml
+          token: ${{ secrets.CODECOV_TOKEN }}