Add plugin to convert linebreaks into paragraph-wrapped text

Problem/Motivation

When migrating text there can be a disconnect between the text stored on the old site and what you want the new editor experience to be specifically when the old site supported converting line breaks to paragraph tags but the new site you want to leverage HTML via the WYSIWYG editor.

Proposed resolution

Add a process plugin that uses the filter logic to convert line breaks into paragraph tags.

Remaining tasks

Add a process plugin that uses the filter logic to convert line breaks into paragraph tags.
Test coverage.

User interface changes

n/a

API changes

New process plugin.

Data model changes

n/a