split up localgov_paragraphs into more targeted modules

[joachim-n]

This module adds a lot of contrib dependencies which aren't always needed in a project.

For example:

• the localgov_table paragraph type uses a tablefield field, which requires tablefield module
• the localgov_contact_office_hours paragraph type uses an office_hours field, which requires office_hours module

If a site doesn't use either of these paragraph types, then that is:

• paragraph types that aren't necessary
• field types, widgets, and formatters that aren't necessary
• installed modules which aren't necessary

The above is all a burden on performance.

These could be moved to a separate project, so there is no longer the composer dependency, or at least moved to submodules so there's no longer the Drupal dependency.

[stephen-cox]

I would be for this as the current split between modules is no longer relevant; it dates back to what they were developed, but most paragraph types are installed and enabled for use with layout paragraphs.

There's still a question how to split them up though.

[andybroomfield]

Also would echo this, it would be handy not to have all paragraph types and dependencies enabled. Thinking the mapping ones (see #238)