Add Apply button to mobile filter drawer

[Mahimahto]

What this PR does

• Added an "Apply Filters" button in the mobile filter drawer.
• Users can now explicitly apply their selected filters instead of filters being applied automatically.
• Integrated the button with the phx-submit event apply-mobile-filters.

How it works

• The form captures filter inputs (date range, severity, casual, appropriated, source, categories, sort) in a filters map.
• On clicking "Apply Filters", the handle_event/3 function is triggered, converting filter params into a query string and updating the page via push_patch.

Current Issue / Pending

• Even after adding the "Apply Filters" button, the filters are still applied automatically without clicking the button.
• Need guidance on how to prevent automatic filter application and ensure filters are applied only on clicking the button.

Notes / Questions

• Requesting input on how to modify the current LiveView so that filters are applied only on submit.

[dennyabrain]

Very good work on this @Mahimahto!
Merging now.