feat: codecov (#8219)

codecov.yml

@@ -0,0 +1,26 @@
+codecov:
+  notify:
+    after_n_builds: 6
+  strict_yaml_branch: main
+
+coverage:
+  range: '50...90'
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 5%
+        informational: true
+    patch: off
+
+flag_management:
+  default_rules:
+    statuses:
+      - type: project
+        target: auto
+        threshold: 2%
+        informational: true
+
+comment:
+  require_changes: true
+  after_n_builds: 6