As part of [#3421093], the plan is to improve the shortcut integration by making it more flexible and allow to have users customize their own shortcuts.
Once the plugin manager is developed, add a new plugin that allows users to personalise their shortcuts. This plugin can be chosen from the shortcut set entity type form, and adds a new relationship field of the shortcut with the user. This field needs to be created/disabled on demand when saving the shortcut set form.
When showing a shortcut set, filter and cache for the current user visualizing the page/block.
For simplicity, don't allow to change the shortcut type once created if it has shortcuts.
Handle the permissions to delete shortcuts.
Ensure that only privileged users can see other user's shortcuts.
TBD
The plugin needs to introduce a new field so the shortcut can effectively filter by user.
Needs review
Code
This includes the work from 📌 Shortcut set default plugin Needs review