Add a separation layer for save/load/clear to ManageTokensModel
so that we can save/load from external sources.
The separate layer is composed of JSON as protocol, a set of signals
and slots for interface. The implementation forwards data to current
QSettings for storybook and nim controllers for the app.
Updates #13313, #13312
It provides visual alignments to the current design and also
significantly improves performance because ListView components
are not "unrolled" causing instantiation of too many delegates.
Closes: #12703Closes: #13043
- add new Hidden tab/section to Settings/Wallet/Manage tokens page and
storybook
- extract the controller(s) to ManageTokensView.qml to share them across
the tabs
- updated the grouped UI delegate
- adjust the tests
Fixes#13201Fixes#13188