feat(evm): add wallet access grant/revoke functionality

useragent/lib/providers/sdk_clients/wallet_access.dart

@@ -0,0 +1,25 @@
+
+import 'package:arbiter/proto/user_agent.pb.dart';
+import 'package:arbiter/providers/connection/connection_manager.dart';
+import 'package:mtcore/markettakers.dart';
+import 'package:protobuf/well_known_types/google/protobuf/empty.pb.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'wallet_access.g.dart';
+
+@riverpod
+Future<List<SdkClientWalletAccess>?> walletAccess(Ref ref) async {
+  final connection = await ref.watch(connectionManagerProvider.future);
+  if (connection == null) {
+    return null;
+  }
+
+  final accesses = await connection.ask(UserAgentRequest(listWalletAccess: Empty()));
+
+  if (accesses.hasListWalletAccessResponse()) {
+    return accesses.listWalletAccessResponse.accesses.toList();
+  } else {
+    talker.warning('Received unexpected response for listWalletAccess: $accesses');
+    return null;
+  }
+}

useragent/lib/providers/sdk_clients/wallet_access.g.dart

@@ -0,0 +1,51 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'wallet_access.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint, type=warning
+
+@ProviderFor(walletAccess)
+final walletAccessProvider = WalletAccessProvider._();
+
+final class WalletAccessProvider
+    extends
+        $FunctionalProvider<
+          AsyncValue<List<SdkClientWalletAccess>?>,
+          List<SdkClientWalletAccess>?,
+          FutureOr<List<SdkClientWalletAccess>?>
+        >
+    with
+        $FutureModifier<List<SdkClientWalletAccess>?>,
+        $FutureProvider<List<SdkClientWalletAccess>?> {
+  WalletAccessProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'walletAccessProvider',
+        isAutoDispose: true,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$walletAccessHash();
+
+  @$internal
+  @override
+  $FutureProviderElement<List<SdkClientWalletAccess>?> $createElement(
+    $ProviderPointer pointer,
+  ) => $FutureProviderElement(pointer);
+
+  @override
+  FutureOr<List<SdkClientWalletAccess>?> create(Ref ref) {
+    return walletAccess(ref);
+  }
+}
+
+String _$walletAccessHash() => r'954aae12d2d18999efaa97d01be983bf849f2296';