Maybe implement Source link replacements as a TextFormatter Configuration

[n-peugnet]

Two of the planned features seem to require a TextFormatter Configuration:

• Links in source discussion are shown in the preview the way they will be seen once posted
• Links in source discussion are automatically created from #<id> text (e.g. #42)

Additionally, two currently working features seem to be implementable partially in the backend this way:

• Links in source discussion are changed to show the title of target discussion when the text is the same as the href
• Links in source discussion have (comment) indication if it points to a specific comment

But I dont know if remaking these working features this way would enhance the overall performances or not.

Examples

• https://github.com/flarum/framework/blob/main/extensions/mentions/src/ConfigureMentions.php
• https://github.com/FriendsOfFlarum/github-autolink/blob/master/src/Plugins/GithubIssue/Configurator.php