Add a .codecov file to get rid of some nags

Author: eddelbuettel

.codecov.yml

@@ -0,0 +1,10 @@
+comment: false
+coverage:
+  status:
+    project:
+      default:
+        target: 70%    # the (on purpose low) required coverage value
+        threshold: 10% # the permitted delta in hitting the target
+    patch:
+      default:
+        target: 0%     # the (on purpose low) required coverage value

ChangeLog

@@ -4,6 +4,8 @@
 	format string issue reported by R-devel
 	* R/RcppExports.R: Idem
 
+	* .codecov.yml: Added
+
 2023-05-14  Dirk Eddelbuettel  <edd@debian.org>
 
 	* DESCRIPTION (Version, Date): Release 0.1.10