Plugins sidebar group

Pages:
# Overview
	- what are plugins
	- how do they work
	- common use cases

# Using plugins
	- adding a plugin to your pipeline (as a step/in other steps)
	- configuration
	- more complex code example with a description of how the build would run
	- sources (github, git, local)

# Developing plugins
	- writing a plugin
	- testing your new plugin (how to use the tester and cli)
	- tools

# Security
	- using 3rd party code
	- recommended practices

# Directory
	- what is it
	- how to get your plugin there
	- criteria for plugins in the directory


Add outline for new section
Add outline for new section
