Implement the PB basic paragraphs and their fields

[noelrivasc]

The purpose of paragraph modules is just to provide the entity configurations with their fields so that editors can have a place to create paragraphs. Paragraph modules are not concerned with the style or behavior of the rendered entities; that's the domain of the theme.

The minimum set of paragraphs are:

• Card with link
• Heading
• Image
• Rich text
• Video

The extended set should include:

• Slider
• Logo strip
• Embed URL

Notes on structure:

• Each paragraph should be in its own module
• Each field should be in its own module
• The paragraph modules should declare their fields as dependencies
• Modules whose paragraphs require JS must not provide the JS themselves (since the module is a dev tool and will not be deployed in production).

[noelrivasc]

In the end, I threw the requirements to isolate fields and paragraphs in their own modules out the window. It seemed too convoluted and unnecessary.

All the base fields and paragraphs live in the same module, which is called pb_base_paragraphs. Enable it and you get all the basics.

I see no use case for getting a single field or paragraph in the context of PB.

The isolation, however, may apply to paragraphs for other modules such as the Resource Center.