feat: add a new slack channel for the operator-builder project

Signed-off-by: Dustin Scott <[email protected]>

Author: Dustin Scott

communication/slack-config/channels.yaml

@@ -310,6 +310,7 @@ channels:
   - name: openshift-users
   - name: openstack-helm
   - name: openstack-kolla
+  - name: operator-builder
   - name: operator-sdk-dev
   - name: ops-status
     archived: true