TF-2384 Create TwakeCore in ios folder to handle network jmap request to server

Signed-off-by: dab246 <tdvu@linagora.com>
(cherry picked from commit d8a330b987860f133b7e56b4aa67669c9d3c8f20)

ios/TwakeCore/Jmap/Model/Request/JmapRequestObject.swift

@@ -0,0 +1,68 @@
+import Foundation
+
+struct JmapRequestObject: Codable {
+    let using: [String]
+    let methodCalls: [[RequestInvocation]]
+}
+
+enum RequestInvocation: Codable {
+    case methodRequest(MethodRequest)
+    case string(String)
+    
+    init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let x = try? container.decode(String.self) {
+            self = .string(x)
+            return
+        }
+        if let x = try? container.decode(MethodRequest.self) {
+            self = .methodRequest(x)
+            return
+        }
+        throw DecodingError.typeMismatch(RequestInvocation.self, DecodingError.Context(codingPath: decoder.codingPath, debugDescription: "Wrong type for RequestInvocation"))
+    }
+    
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .methodRequest(let x):
+            try container.encode(x)
+        case .string(let x):
+            try container.encode(x)
+        }
+    }
+}
+
+struct MethodRequest: Codable {
+    let accountId: String
+    let sinceState: String?
+    let ids: ResultReference?
+    let properties: [String]?
+    
+    enum CodingKeys: String, CodingKey {
+        case accountId
+        case sinceState
+        case ids = "#ids"
+        case properties
+    }
+}
+
+struct ResultReference: Codable {
+    let resultOf, name, path: String
+}
+
+extension JmapRequestObject {
+    func toData() -> Data? {
+        if let encodedData = try? JSONEncoder().encode(self) {
+            return encodedData
+        }
+        return nil
+    }
+    
+    func toJson() -> String? {
+        if let data = toData(), let jsonString = String(data: data, encoding: .utf8) {
+            return jsonString
+        }
+        return nil
+    }
+}