api: Add video chat configs to initial_snapshot

Added jitsiServerUrl and realmVideoChatProvider
to initial_snapshot

Author: MritunjayTiwari14

lib/api/model/initial_snapshot.dart

@@ -88,6 +88,8 @@ class InitialSnapshot {
   /// Search for "realm_wildcard_mention_policy" in https://zulip.com/api/register-queue.
   final RealmWildcardMentionPolicy realmWildcardMentionPolicy;
 
+  final int realmVideoChatProvider;
+
   final bool realmMandatoryTopics;
 
   final String realmName;
@@ -113,6 +115,8 @@ class InitialSnapshot {
 
   final Map<String, RealmDefaultExternalAccount> realmDefaultExternalAccounts;
 
+  final String? jitsiServerUrl;
+
   final int maxFileUploadSizeMib;
 
   final Uri serverEmojiDataUrl;
@@ -181,6 +185,7 @@ class InitialSnapshot {
     required this.realmDeleteOwnMessagePolicy,
     required this.realmWildcardMentionPolicy,
     required this.realmMandatoryTopics,
+    required this.realmVideoChatProvider,
     required this.realmName,
     required this.realmWaitingPeriodThreshold,
     required this.realmMessageContentDeleteLimitSeconds,
@@ -190,6 +195,7 @@ class InitialSnapshot {
     required this.realmIconUrl,
     required this.realmPresenceDisabled,
     required this.realmDefaultExternalAccounts,
+    required this.jitsiServerUrl,
     required this.maxFileUploadSizeMib,
     required this.serverEmojiDataUrl,
     required this.realmEmptyTopicDisplayName,