simple code of conduct - for kube-rs#586 (kube-rs#593)

clux · web-flow · commit e668ca0f812c · 2021-07-19T10:04:12.000+01:00
taken from helm. seems best practice to just link to the root one, and
use lowercase naming (both helm and kubernetes/client-go does this)
diff --git a/code-of-conduct.md b/code-of-conduct.md
@@ -0,0 +1,3 @@
+# Community Code of Conduct
+
+kube-rs follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md).

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+# Community Code of Conduct`
	`2`	`+`
	`3`	`+kube-rs follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md).`