VOL-4977 Failure in voltha-protos verification job.

Makefile
makefiles/consts.mk
makefiles/virtualenv.mk
-----------------------
  o Update to use library makefile virtualenv.mk to create .venv
    and remove by clean/sterile target.
  o Construct commands using '&&' -vs- ';' to better detect errors.
  o pip install packages relocated into the requirements.txt file.
  o Separate extra deps from target rule since they are never
    processed by the target rule.
  o Added banners for readabilty.

makefiles/lint/golang/sca.mk
makefiles/lint/golang/include.mk
--------------------------------
  o lint target for golang sources.

Tested with python v3.10 (localhost) and v2.7 (docker container).
Debug to see if hangs are dependent on the patch reported in vol-4977.

Change-Id: I0783f6fb347bf2cd15350f9e17fc19695343b7ac
diff --git a/makefiles/lint/golang/include.mk b/makefiles/lint/golang/include.mk
new file mode 100644
index 0000000..5289a39
--- /dev/null
+++ b/makefiles/lint/golang/include.mk
@@ -0,0 +1,33 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2017-2023 Open Networking Foundation
+#
+# 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.
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+	@echo '  lint-golang           Syntax check golang sources'
+	@echo '    FIX=1               In-place file update'
+
+include $(MAKEDIR)/lint/golang/sca.mk
+
+# [EOF]