Add a new state event type: "m.room.retention"

# Conflicts:
#	MatrixSDK/Contrib/Swift/JSONModels/MXEvent.swift
#	MatrixSDK/JSONModels/MXEvent.h
#	MatrixSDK/JSONModels/MXEvent.m
#	MatrixSDK/Utils/MXTools.m

Author: giomfo

MatrixSDK/Contrib/Swift/JSONModels/MXEvent.swift

@@ -86,6 +86,7 @@ public enum MXEventType: Equatable, Hashable {
 
     case beaconInfo
     case beacon
+    case roomRetention
 
     case custom(String)
 
@@ -141,6 +142,7 @@ public enum MXEventType: Equatable, Hashable {
         case .taggedEvents: return kMXEventTypeStringTaggedEvents
         case .spaceChild: return kMXEventTypeStringSpaceChild
         case .spaceOrder: return kMXEventTypeStringSpaceOrderMSC3230
+        case .roomRetention: return kMXEventTypeStringRoomRetention
 
         case .pollStart: return kMXEventTypeStringPollStartMSC3381
         case .pollResponse: return kMXEventTypeStringPollResponseMSC3381
@@ -157,7 +159,7 @@ public enum MXEventType: Equatable, Hashable {
     }
 
     public init(identifier: String) {
-        let events: [MXEventType] = [.roomName, .roomTopic, .roomAvatar, .roomMember, .roomCreate, .roomJoinRules, .roomPowerLevels, .roomAliases, .roomCanonicalAlias, .roomEncrypted, .roomEncryption, .roomGuestAccess, .roomHistoryVisibility, .roomKey, .roomForwardedKey, .roomKeyRequest, .roomMessage, .roomMessageFeedback, .roomRedaction, .roomThirdPartyInvite, .roomTag, .presence, .typing, .callInvite, .callCandidates, .callAnswer, .callSelectAnswer, .callHangup, .callReject, .callNegotiate, .callReplaces, .callRejectReplacement, .callAssertedIdentity, .callAssertedIdentityUnstable, .reaction, .receipt, .roomTombStone, .keyVerificationStart, .keyVerificationAccept, .keyVerificationKey, .keyVerificationMac, .keyVerificationCancel, .keyVerificationDone, .secretRequest, .secretSend, .secretStorageDefaultKey, .taggedEvents, .spaceChild, .spaceOrder, .pollStart, .pollResponse, .pollEnd, .beaconInfo, .beacon]
+        let events: [MXEventType] = [.roomName, .roomTopic, .roomAvatar, .roomMember, .roomCreate, .roomJoinRules, .roomPowerLevels, .roomAliases, .roomCanonicalAlias, .roomEncrypted, .roomEncryption, .roomGuestAccess, .roomHistoryVisibility, .roomKey, .roomForwardedKey, .roomKeyRequest, .roomMessage, .roomMessageFeedback, .roomRedaction, .roomThirdPartyInvite, .roomTag, .presence, .typing, .callInvite, .callCandidates, .callAnswer, .callSelectAnswer, .callHangup, .callReject, .callNegotiate, .callReplaces, .callRejectReplacement, .callAssertedIdentity, .callAssertedIdentityUnstable, .reaction, .receipt, .roomTombStone, .keyVerificationStart, .keyVerificationAccept, .keyVerificationKey, .keyVerificationMac, .keyVerificationCancel, .keyVerificationDone, .secretRequest, .secretSend, .secretStorageDefaultKey, .taggedEvents, .spaceChild, .spaceOrder, .pollStart, .pollResponse, .pollEnd, .beaconInfo, .beacon, .roomRetention]
 
         if let type = events.first(where: { $0.identifier == identifier }) {
             self = type

MatrixSDK/JSONModels/MXEvent.h

@@ -103,6 +103,7 @@ typedef NS_ENUM(NSInteger, MXEventType)
     MXEventTypeSpaceOrder,
     MXEventTypeBeaconInfo,
     MXEventTypeBeacon,
+    MXEventTypeRoomRetention,
 
     // The event is a custom event. Refer to its `MXEventTypeString` version
     MXEventTypeCustom = 1000
@@ -163,6 +164,7 @@ FOUNDATION_EXPORT NSString *const kMXEventTypeStringSpaceChild;
 FOUNDATION_EXPORT NSString *const kMXEventTypeStringSpaceOrder;
 FOUNDATION_EXPORT NSString *const kMXEventTypeStringSpaceOrderMSC3230;
 FOUNDATION_EXPORT NSString *const kMXEventTypeStringSpaceOrderKey;
+FOUNDATION_EXPORT NSString *const kMXEventTypeStringRoomRetention;
 
 // Interactive key verification
 FOUNDATION_EXPORT NSString *const kMXEventTypeStringKeyVerificationRequest;

MatrixSDK/JSONModels/MXEvent.m

@@ -115,6 +115,7 @@
 NSString *const kMXMessageTypeLocation               = @"m.location";
 NSString *const kMXMessageTypeFile                   = @"m.file";
 NSString *const kMXMessageTypeServerNotice           = @"m.server_notice";
+NSString *const kMXEventTypeStringRoomRetention      = @"m.room.retention";
 NSString *const kMXMessageTypeKeyVerificationRequest = @"m.key.verification.request";
 
 NSString *const kMXMessageBodyKey                    = @"body";

MatrixSDK/Utils/MXTools.m

@@ -215,7 +215,8 @@ + (void)initialize
             kMXEventTypeStringBeaconInfoMSC3672 : @(MXEventTypeBeaconInfo),
             kMXEventTypeStringBeaconInfo : @(MXEventTypeBeaconInfo),
             kMXEventTypeStringBeaconMSC3672 : @(MXEventTypeBeacon),
-            kMXEventTypeStringBeacon : @(MXEventTypeBeacon)
+            kMXEventTypeStringBeacon : @(MXEventTypeBeacon),
+            kMXEventTypeStringRoomRetention: @(MXEventTypeRoomRetention),
         };
 
         isEmailAddressRegex =  [NSRegularExpression regularExpressionWithPattern:[NSString stringWithFormat:@"^%@$", kMXToolsRegexStringForEmailAddress]