[coverage] Add a global config yaml

Author: vgvassilev

.codecov.yml

@@ -0,0 +1,29 @@
+codecov:
+  require_ci_to_pass: no
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+
+  status:
+    project: yes
+    patch: yes
+    changes: no
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach, diff, flags, tree, files"
+  behavior: default
+  require_changes: no
+
+ignore:
+  - test/*
+  - test/**/*