Confusing field names when creating 2+ Keepeek media types

Problem/Motivation

When creating 2 or more Keepeek media types, the field machine names are confusing and do not align with the order the media types are created in.

If you create 3 Keepeek media types with the " Create" option, you'll get the following 6 fields added to those 3 media types:

• first media type:
  • field_media_keepeek
  • field_media_keepeek_1_json
• second media type:
  • field_media_keepeek_1
  • field_media_keepeek_2_json
• third media type:
  • field_media_keepeek_2
  • field_media_keepeek_3_json

Steps to reproduce

With a fresh install of the module, create 3 new media types with the following options:

• Keepeek
• • Create

Proposed resolution

A few possible solutions:

• Use the same auto-generated number for both fields.
• Or use the media type's machine name as the base of the field names. e.g. a keepeek_video media type gets these two fields: field_media_keepeek_video and field_media_keepeek_video_json
• Allow the user to specify the field name

User interface changes

Possibly a new form field for specifying the machine name of the "Field with source information".