Copy minimal Codecov manifest from PyO3.

adamreichold · adamreichold · commit 662447280557 · 2022-01-26T21:54:42.000+01:00
diff --git a/codecov.yml b/codecov.yml
@@ -0,0 +1,11 @@
+comment: off
+
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 0.25%
+
+ignore:
+  - tests/*.rs
