PG-328 Documentation setu and deploy on GH Pages

modified:   docs/USER_GUIDE.md
	new file:   docs/_images/PPG_links.png
	new file:   docs/_images/percona-favicon.ico
	new file:   docs/_images/percona-logo.svg
	new file:   docs/_images/percona_favicon.ico
	new file:   docs/css/percona.css
	new file:   docs/css/toctree.css
	new file:   docs/index.md
	new file:   docs/js/version-select.js
	new file:   docs/setup.md
	new file:   mkdocs.yml

docs/_images/percona-logo.svg

@@ -0,0 +1,12 @@
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