Convert functions to async/await

Sources/App/Extensions/Optional+Extensions.swift

@@ -0,0 +1,18 @@
+//
+//  File.swift
+//  
+//
+//  Created by CH on 12.10.22.
+//
+
+import Foundation
+
+extension Optional {
+
+    func unwrap(or error: @autoclosure () -> Error) throws -> Wrapped {
+        guard let unwrapped = self else {
+            throw error()
+        }
+        return unwrapped
+    }
+}