CW1612: AnyPay Service Layer (#3516)

* fix android CI

* feat: add anypay core models, parser and routing engine

* feat: add anypay resolver, anypay service and wallet switch service

* refactor: route the send page payment flow through anypay service

* fix: show message when there's no swap providers for a pair and reset the trade guard on dismissal

* refactor: merge the swap from network and send to network decision pages together and clean up anypay widgets

* feat: reapply deep links to a currently open send flow and register the solana scheme

* feat: add support for zcash address detection to anypay and other minor fixes

* refactor: remove trailing icon

* feat: hide swap flow for sp and mweb addresses

* feat: enhance zcash address detection and deeplink handling

* fix: pin bitcoin_base

* refactor: Move the anypay decision navigation out of the send page and address minor review comments

* refactor: Move the anypay decision navigation out of the send page and address minor review comments

* feat: handle exception in switch service and mvoe balance compute to call site

* refactor: combine anypay entry points to one and extract selected mode widget

---------

Co-authored-by: Czarek Nakamoto <cyjan@mrcyjanek.net>

lib/view_model/send/send_view_model.dart

@@ -1730,6 +1730,11 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
     }
   }
 
+  @action
+  void applyAnyPayCurrency(CryptoCurrency currency) {
+    selectedCryptoCurrency = currency;
+  }
+
   String _decodeMethodSelector(String s) =>
       (s.startsWith('0x') && s.length >= 10) ? s.substring(0, 10) : '';
 }