ci: add support for codecov components and add dedicated workflow

Author: remyleone

codecov.yml renamed to .github/codecov.yml

@@ -0,0 +1,49 @@
+name: Code Coverage
+
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches:
+      - main
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 1
+
+      - name: Install Go
+        uses: actions/setup-go@v6
+        with:
+          go-version: stable
+
+      - name: Install Terraform
+        uses: hashicorp/setup-terraform@v3
+
+      - name: Build binaries
+        run: make build
+
+      - name: Verify go.mod is tidy
+        run: |
+          go mod tidy
+          git diff --exit-code
+
+      - name: Run coverage
+        run: go tool gotestsum --format github-actions --junitfile junit.xml -- -coverprofile=coverage.out -covermode=count ./...
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() }}
+        uses: codecov/test-results-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}