feat(drivers): add card view layout for Drivers Management

[janni1288]

Summary

Adds a "Card View" layout to Drivers Management, mirroring the existing Vehicles Management implementation. Users can now toggle between table and card views, with the preference persisted via appCache.

Changes

• Add Driver::Card component (addon/components/driver/card.{hbs,js}), modeled directly on Vehicle::Card. Displays avatar (via avatar-url helper with driver image fallback), name, phone, status badge (color-mapped the same way as cell/driver-identity), assigned vehicle, and lost modified timestamp. View/edit/delete actions wired to the driverActions service.
• Update ManagementDriversIndexController to persist the layout preference (fleetops:drivers:layout) via appCache, and add a table/grid toggle to the action buttons, mirroring the Vehicles controller.
• Update the drivers index template to conditionally render Layout::Ressource::Tabular (table) or Layout::Resource::CardsGrid + Driver::Card (grid), matching the Vehicles index template structure.

Commits

1. feat(driver): add driver card component
2. feat(drivers): persist card/table layout preference
3. feat(drivers): add card view layout toggle to drivers index

Testing

• Card view renders avatar, name, phone, status, assigned vehicle, and last modified correctly
• View/Edit/Delete actions work from the card
• Toggle between table and grid view works
• Layout preference persists across page reload
• Filter and pagination state preserved when switching views

Reference

Mirrors the existing card view implementation in Vehicles Management (Vehicle::Card, Layout::Resource::CardsGrid).

Closes #178

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (4e0fc5f) to head (4d83063).
⚠️ Report is 36 commits behind head on dev-v0.6.61.

Additional details and impacted files

@@               Coverage Diff                @@
##             dev-v0.6.61      #299    +/-   ##
================================================
  Coverage         100.00%   100.00%            
- Complexity          9815      9899    +84     
================================================
  Files                523       526     +3     
  Lines              37888     38163   +275     
================================================
+ Hits               37888     38163   +275     

Flag	Coverage Δ
backend	100.00% <ø> (ø)

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[roncodes]

Implemented the requested driver card follow-up in commit 4d83063:

• added the missing app re-export for Driver::Card
• replaced the handwritten footer status pill with the shared Badge component
• made the driver photo full-bleed, full width/height, object-cover, and explicitly non-rounded
• moved the online indicator into the header at the top right of the driver name
• added a focused Driver::Card integration test covering these presentation contracts

Validation completed:

• Prettier check passed
• ESLint passed
• Ember template lint passed
• git diff --check passed

The focused Ember test build was also attempted. It progressed through compilation with the repositories existing ember-intl warnings but then stalled before producing browser assertion results, so I stopped the hung local runner and am not claiming that test as passed.