Allow users to create Export Templates to Journals

[renatoalmeidaoliveira]

NetBox version

v3.4.1

Feature type

New functionality

Proposed functionality

Allow users to create Export Templates to Journals

Use case

Right now Journal Entries can be exported in the List View, but the model doesn't allow the creation of Custom Export Templates, that feature would be great for folks that are generating dynamic configurations

Database changes

Since the ExportTemplatesMixin doesn't implement any attributes I don't think there be any database changes

External dependencies

None

Proposed changes

Add ExportTemplatesMixin to JournalEntry Model

[renatoalmeidaoliveira]

Proposed changes:
develop...renatoalmeidaoliveira:netbox:develop

[renatoalmeidaoliveira]

@jeremystretch you can make me owner of that issue, and I've already submitted a PR with that change, if you can re open
(#11251) please