move swift examples (#100)

* move swift examples

* swift workflow

* fixup

* rewirte gettingStarted

* add README for swift

* update fiat examples and addresss feedback

snippets/swift/BreezSDKExamples/Sources/SendPayment.swift

@@ -0,0 +1,20 @@
+//
+//  SendPayment.swift
+//
+//
+//  Created by ruben on 13/11/2023.
+//
+
+import BreezSDK
+
+func sendPayment(sdk: BlockingBreezServices) -> SendPaymentResponse? {
+    // ANCHOR: send-payment
+    // The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
+    // The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
+    let req = SendPaymentRequest(bolt11: "...", amountMsat: 3_000_000)
+    let response = try? sdk.sendPayment(req: req)
+    // ANCHOR_END: send-payment
+    return response
+    
+    
+}