ci(workflows): add code coverage and config file

Author: kluge7

.github/workflows/code-coverage.yml

@@ -0,0 +1,10 @@
+name: Code Coverage
+
+on:
+  push:
+
+jobs:
+  coverage_build:
+    uses: vortexntnu/vortex-ci/.github/workflows/reusable-code-coverage.yml@main
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

codecov.yml

@@ -0,0 +1,15 @@
+coverage:
+  precision: 2
+  round: down
+  status:
+    project:
+      default:
+        informational: true
+        flags:
+          - unittests
+    patch: off
+fixes:
+  - "ros_ws/src/vortex_utils/::"
+comment:
+  layout: "diff, flags, files"
+  behavior: default