Add codecov config

.github/codecov.yaml

@@ -0,0 +1,16 @@
+
+codecov:
+  notify:
+    wait_for_ci: false
+
+github_checks:
+  annotations: false
+
+coverage:
+  status:
+    project:
+      default:
+        informational: true
+    patch:
+      default:
+        informational: true

README.md

@@ -54,6 +54,8 @@
 <a href="https://sonarcloud.io/dashboard?id=jellyfin_jellyfin-kodi">
 <img src="https://sonarcloud.io/api/project_badges/measure?project=jellyfin_jellyfin-kodi&metric=security_rating" alt="Security Rating" />
 </a>
+<br />
+<a href="https://codecov.io/github/jellyfin/jellyfin-kodi"><img src="https://codecov.io/github/jellyfin/jellyfin-kodi/graph/badge.svg" alt="Code coverage" /></a>
 </p>
 
 <table>