Document VOLTHA Resources

resources/docker.rst
resources/repositories.rst
--------------------------
  o Added a resources/ section in docs.voltha.org.
  o Display links for docker URLs and gerrit/github repositories.
  o rst table generation is partly automated using a list of resource
    names and a makefile target that can generate line items.
  o This logic should be built out so docker.rst and resources.rst
    can be fully auto-generated.
  o resources::gerrit repository urls have been populated in the table.
    Strange: url syntax is fine (matches manual navigation), gitiles is
    able to digest the url but only displays a white screen.  Might be
    missing a cookie or context the UI passes.  Will debug this later.

Change-Id: I71ed0e3760ed597707a0abaf35b2e07a68e14ed7
diff --git a/resources/sources/voltha.docker b/resources/sources/voltha.docker
new file mode 100644
index 0000000..3fd17db
--- /dev/null
+++ b/resources/sources/voltha.docker
@@ -0,0 +1,43 @@
+## -----------------------------------------------------------------------
+## Copyright 2021-2023 Open Networking Foundation (ONF) and the ONF Contributors
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+## http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## -----------------------------------------------------------------------
+
+voltha/bbsim
+voltha/bbsim-sadis-server
+volthacore/voltha-rw-core
+voltha/voltha-adapter-simulated-olt
+voltha/voltha-adapter-simulated-onu
+voltha/voltha-afrouter
+voltha/voltha-afrouterd
+voltha/voltha-bbsim
+voltha/voltha-ci-tools
+voltha/voltha-cli
+voltha/voltha-dashd
+voltha/voltha-envoy
+voltha/voltha-netconf
+voltha/voltha-ofagent-go
+voltha/voltha-ofagent
+voltha/voltha-onos
+voltha/voltha-openolt-adapter
+voltha/voltha-openonu-adapter
+voltha/voltha-openonu-adapter-go
+voltha/voltha-ponsim
+voltha/voltha-ro-core
+voltha/voltha-rw-core
+voltha/voltha-shovel
+voltha/voltha-tester
+voltha/voltha-voltha
+
+# [EOF]