Ability to add custom Formats

[deshetti]

The functionality we have currently:

• Users have an option to add a new custom format at a space level, but this doesn't really do much in terms of functionality.
• By default, we have two formats:
  1. Articles
  2. Fact Checks
• If a user has to add a new post of format for ex: Job Post, they can only add it as a post of format article. Any extra fields that they have to add specific to a Job Post, will have to be added as Meta Fields.

Proposed functionality to provide users to add custom formats in a space:

• When adding a new format, we have to provide an option for adding extra fields. For eg, in a Job Post, the user should be able to add extra fields like:
  1. Job Location - Type: String, Optional: False
  2. Salary - Type: Integer, Optional: True
• The above fields in the backend should be added into a new filed extra-fields of type json
• The new format should show as a new menu item in the studio. This should filter the posts of the specificformat
• When adding a new format, the extra fields above should be rendered on the form based on the type and optional

This provides the ability to extend Dega to any custom format that is not supported by default. We should continue to add more default formats adhering to all the best practices, but providing users the ability to add custom formats provides a great way to extend Dega to its limits.