codecov added

.github/codecov.yml

@@ -0,0 +1,17 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 1
+  round: down
+  range: "70...100"
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 0.5%
+
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: yes

.github/workflows/ci.yml

@@ -33,4 +33,18 @@ jobs:
           cache-dependency-path: "**/go.sum"
       - name: Run coverage tests
         run: |
-          make test-coverage
+          make test-coverage
+          mkdir $TEST_RESULTS
+          cp coverage.out $TEST_RESULTS
+          cp coverage.html $TEST_RESULTS
+      - name: Upload coverage report
+        uses: codecov/codecov-action@v3.1.4
+        with:
+          file: ./coverage.txt
+          fail_ci_if_error: true
+          verbose: true
+      - name: Store coverage test output
+        uses: actions/upload-artifact@v3
+        with:
+          name: opentelemetry-go-test-output
+          path: ${{ env.TEST_RESULTS }}