DOC-1969: lists and advlists plugins, text_patterns, and implicit and explicit list-creation UIs

[brian-forte]

Ticket: lists and advlists plugins, text_patterns, and implicit and explicit list-creation UIs.

Changes:

• Removed references to the lists plugin being required for some text-patterns to work: the plugin is not so required.
• edits and additions to multiple files documenting the implicit and explicit list-creation UIs.
• Configuration example edits and additions.

Pre-checks:

• [x] Branch prefixed with feature/6/ or hotfix/6/
• [x] Changelog entry added
• [x] Files has been included where required (if applicable)

Review:

• [ ] Documentation Team Lead has reviewed