Add support for pre-commit hook/linting

.pre-commit-config.yaml
-----------------------
  o Create initial config for pre-commit hook.

misc/*
  o Basic inline cleanups courtesy of the pre-commit hook.

Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
Change-Id: I6aa20216ade22b1a7406e8358864fb245842b713
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..fb93a96
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,62 @@
+---
+
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.2.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files
+-   repo: https://github.com/psf/black
+    rev: 22.10.0
+    hooks:
+    -   id: black
+-   repo: https://github.com/koalaman/shellcheck-precommit
+    rev: v0.10.0
+    hooks:
+    -   id: shellcheck
+-   repo: https://github.com/adrienverge/yamllint.git
+    rev: v1.35.1
+    hooks:
+    -   id: yamllint
+
+# -------------------------------------------------------------------
+# https://docs.python.org/3/library/re.html#regular-expression-syntax
+# -------------------------------------------------------------------
+exclude: |
+    (?x)^(
+        ^jjb/.*             |
+        ^jenkins-scripts/.* |
+        ^makefiles/.*       |
+        ^lf/.*              |
+        ^lf-ansible/.*      |
+        ^packer/.*          |
+        ^test/.*            |
+        ^.venv/.*           |
+        ^jjb/pipeline/voltha/voltha-physical-soak-dt-tests.groovy
+    )$
+
+
+# -----------------------------------------------------------------------
+# declare -a args=()
+# args+=('--color=always')
+#
+# if true; then
+#    args+=('--all-files')
+# else
+#    args+=('--files' 'jjb/pipeline/voltha/voltha-physical-soak-dt-tests.groovy')
+# fi
+#
+# freeze
+# args+=('--bleeding-edge')
+# args+=('--freeze')
+#
+# args+=('--show-diff-on-failure')
+#
+# pre-commit run "${args[@]}"  &1 | tee log
+# -----------------------------------------------------------------------
+    
+# [EOF]