Add the following features:
- `Ctrl + Click` / `Cmd + Click` to toggle selection of additional
tasks.
- `Shift + Click` to select a range of additional tasks.
- Ability to perform `Cancel` and `Requeue` actions on multiple tasks
concurrently.
- Notifications on how many tasks successfully/failed to have an
action performed.
Tabulator has selectable rows built-in and provides a function that
can return an array of all selected rows. However, tabulator's default
behavior for multi-selection does not reset to a single task after
each regular click. Therefore, I built a custom multi-select using the
tabulator API, introducing `Shift + click` and `Ctrl + click` and
matching their behaviors as they work in most file explorers,
including Blender's.
In addition to manipulating the Tabulator's row selection, the state
of selected Tasks is also needs to be copied to Pinia stores. This
stores will allow us to access selected Tasks from any component and
make API calls on them.
Ref: #99396
Reviewed-on: https://projects.blender.org/studio/flamenco/pulls/104386
Reviewed-by: Sybren A. Stüvel <sybren@blender.org>
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