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/LnurlAuth.swift

@@ -0,0 +1,32 @@
+//
+//  LnurlAuth.swift
+//  
+//
+//  Created by ruben on 14/11/2023.
+//
+
+import Foundation
+import BreezSDK
+
+func auth(sdk: BlockingBreezServices) {
+    // ANCHOR: lnurl-withdraw
+    // Endpoint can also be of the form:
+    // keyauth://domain.com/auth?key=val
+    let lnurlAuthUrl = "lnurl1dp68gurn8ghj7mr0vdskc6r0wd6z7mrww4excttvdankjm3lw3skw0tvdankjm3xdvcn6vtp8q6n2dfsx5mrjwtrxdjnqvtzv56rzcnyv3jrxv3sxqmkyenrvv6kve3exv6nqdtyv43nqcmzvdsnvdrzx33rsenxx5unqc3cxgeqgntfgu"
+
+    
+    if let inputType = try? parseInput(s: lnurlAuthUrl) {
+        if case .lnUrlAuth(let `data`) = inputType {
+            let result = try? sdk.lnurlAuth(reqData: data)
+            switch result {
+            case .ok:
+                print("Successfully authenticated")
+            case .errorStatus(let error):
+                print("Failed to authenticate: \(error)")
+            case .none:
+                print("Failed to authenticate")
+            }
+        }
+    }
+    // ANCHOR_END: lnurl-withdraw
+}