updated plugin docs (#30490)

* updated  docs

- for devs:
  - added inventory/vars section
  - made some updates to general section and other plugin types
- for users:
 - added 'user' plugin section to start describing the plugins
 - docs on types, what they are and how to use

- removed ref to deleted AUTHORS file
- corrected several typos/headers
- added descriptions to config.rst template
- ignore generated files for cli/plugins and config
- remove new generated files on `make clean`
- moved details from devguid and intro doc to plugin specific pages
- pretied up lookup notes
- changed precedence ref to not conflict config
- removed duplicate config data, as config is autogenerated and up to date
- put new plugins under playbooks
- added `pass` cause rst/python dislikes fractions
- removed dupe in .gitignore, alpha sorted to avoid moar dupes
- added try cause rst/python freaks out

* generate plugins into their own dir

only do plugins that support docs
use toctree from main plugins page

.gitignore

@@ -27,28 +27,30 @@ docs/man/man3/*
 *.sublime-project
 *.sublime-workspace
 # docsite stuff...
+docs/api/_build/
+docs/api/rst/
+docs/docsite/*.html
+docs/docsite/_build
+docs/docsite/_static/*.gif
+docs/docsite/_static/*.png
+docs/docsite/_static/websupport.js
+docs/docsite/htmlout
+docs/docsite/searchindex.js
+docs/docsite/rst_warnings
+docs/docsite/rst/*_module.rst
+docs/docsite/rst/ansible.rst
+docs/docsite/rst/ansible-*.rst
 docs/docsite/rst/community_maintained.rst
 docs/docsite/rst/config.rst
 docs/docsite/rst/core_maintained.rst
 docs/docsite/rst/list_of_*.rst
-docs/docsite/rst/*_module.rst
 docs/docsite/rst/modules_by_category.rst
-docs/docsite/rst/plugins_by_category.rst
 docs/docsite/rst/network_maintained.rst
+docs/docsite/rst/plugins_by_category.rst
 docs/docsite/rst/partner_maintained.rst
 docs/docsite/rst/playbook_keywords.rst
 docs/docsite/rst/playbooks_directives.rst
-docs/docsite/rst/plugins/
-docs/docsite/*.html
-docs/docsite/_static/*.gif
-docs/docsite/_static/*.png
-docs/docsite/_static/websupport.js
-docs/docsite/searchindex.js
-docs/docsite/htmlout
-docs/docsite/_build
-docs/docsite/rst_warnings
-docs/api/rst/
-docs/api/_build/
+docs/docsite/rst/plugins/*/*.rst
 # deb building stuff...
 /debian/
 deb-build