* refactor: Improve bridge view model
* Move bridge related vms into single folder
* handle missing class when building for monero.com
* handle missing classes in monero.com build
* Minor enhancements
* Update lib/view_model/bridge/bridge_view_model.dart [skip ci]
* Update lib/view_model/bridge/bridge_view_model.dart
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Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>