feat: add "reset" setting properties

[caro3801]

Since settings are stored in local storage, when they are changed we need to clear the store. to have the changed settings (in particalar when deleting a setting key). Here are the feature that would be nice to add:

• [ ] Reset page settings from the page
• [ ] Reset general settings from general settings
• [ ] Advanced: Clean up general settings on new versions (compare what to delete/what to keep)
• [ ] Advanced: Clean up page settings on new versions (compare what to delete/what to keep)

[github-actions[bot]]

This issue is stale because it has been open for 40 days with no activity.

[Soliine]

Design:

Specs:

• use the same component as the 'Reset' one that we have in FormActions https://icij.github.io/datashare-client/?path=/docs/components-form-formactions-formactions--docs
• The button is sticky on bottom when user scrolls in the settings
• There is a 8 point vertical padding in the sticky bar
• There is no upper border on the sticky bar to match the upper sticky bar 's style
• Vocabulary wise, we can write either 'Reset all' or 'Reset all settings", as you prefer

[pirhoo]

Perfect!

[caro3801]

will be available after 20.0.11