Pro Print Button in Admin

[mnelson4]

Kinda related ot #326 and #329, customers want a button in the admin to quickly print a single post/CPT.

Lawyers Website needs:

• [x] add button to Gutenberg/Classic Editor to print
• [x] add loading page to frontend
• [x] add JS onto loadingn page
• [x] generate doc from loading page
• • link to generate page from:
• [x] classic editor: https://www.sitepoint.com/adding-meta-boxes-post-types-wordpress/
• [x] gutenberg: https://awhitepixel.com/blog/how-to-add-post-meta-fields-to-gutenberg-document-sidebar/
• [x] post action?
• [x] when generating, check if its a project or somethign else. If something else...
• [x] add current format as a format of the postproject
• [x] set metadata defaults if not already set
• [x] add only the current post to the postproject
• [x] use custom design (add filter to override default design)

Adding to Core:

• [x] Add different formats for buttons (not just word)
• [x] settings to change:
• [x] which formats appear
• [x] which design to use for each format
• [ ] link to create full project from post in case they need to use other design or change metadata or add other content

[mnelson4]

• [x] deploy to staging site
• [x] test creating a doc is the same as project
• [x] deploy to live

[mnelson4]

Until I get any feedback, I think this is good enough. Maybe I could make the buttons smaller is all...