Reapply Filter with Prompt

Adds ability to reapply last used filter while prompting the user for additional adjustments. Requested by bollebib in task T7070.

Remaining Tasks

• Reload previously used filter configuration as default values for filter dialog on open. (Solved by @dkazakov )

Test Plan

TBD

Formalities Checklist

• I confirmed this builds.
• I confirmed Krita ran and the relevant functions work.
• I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!)
• I made sure my commits build individually and have good descriptions as per KDE guidelines.
• I made sure my code conforms to the standards set in the HACKING file.
• I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.