Add NWC paste button

Changelog-Added: Added Wallet Connect paste button
Closes: #1235

damus/Views/Wallet/NWCScannerView.swift

@@ -45,26 +45,65 @@ enum WalletScanResult: Equatable {
     case scanning
 }
 
+struct NWCPaste: View {
+    @Binding var result: WalletScanResult
+    
+    @Environment(\.colorScheme) var colorScheme
+
+    init(result: Binding<WalletScanResult>) {
+        self._result = result
+    }
+
+    var body: some View {
+        Button(action: {
+            if let pasted_nwc = UIPasteboard.general.string {
+                guard let url = WalletConnectURL(str: pasted_nwc) else {
+                    self.result = .failed
+                    return
+                }
+                
+                self.result = .success(url)
+            }
+        }) {
+            HStack {
+                Image(systemName: "doc.on.clipboard")
+                Text("Paste")
+            }
+            .frame(minWidth: 300, maxWidth: .infinity, minHeight: 50, maxHeight: 50, alignment: .center)
+            .foregroundColor(colorScheme == .light ? DamusColors.black : DamusColors.white)
+            .overlay {
+                RoundedRectangle(cornerRadius: 24)
+                    .stroke(colorScheme == .light ? DamusColors.black : DamusColors.white, lineWidth: 2)
+            }
+            .padding(EdgeInsets(top: 10, leading: 50, bottom: 25, trailing: 50))
+        }
+    }
+}
+
 struct WalletScannerView: View {
     @Binding var result: WalletScanResult
     
     @Environment(\.dismiss) var dismiss
     
     var body: some View {
-        CodeScannerView(codeTypes: [.qr]) { res in
-            switch res {
-            case .success(let success):
-                guard let url = WalletConnectURL(str: success.string) else {
+        VStack {
+            CodeScannerView(codeTypes: [.qr]) { res in
+                switch res {
+                case .success(let success):
+                    guard let url = WalletConnectURL(str: success.string) else {
+                        result = .failed
+                        return
+                    }
+                    
+                    result = .success(url)
+                case .failure:
                     result = .failed
-                    return
                 }
                 
-                result = .success(url)
-            case .failure:
-                result = .failed
+                dismiss()
             }
-            
-            dismiss()
+            NWCPaste(result: $result)
+                .padding(.vertical)
         }
     }
 }