add membership rendering

lib/models/membership_status.dart

@@ -1,4 +1,4 @@
 import "package:freezed_annotation/freezed_annotation.dart";
 
 @JsonEnum()
-enum MembershipStatus { leave, invite, ban, join }
+enum MembershipStatus { leave, invite, ban, join, knock }

lib/widgets/chat_page/render_event.dart

@@ -8,14 +8,18 @@ import "package:linkify/linkify.dart";
 import "package:nexus/controllers/client_state_controller.dart";
 import "package:nexus/controllers/cross_cache_controller.dart";
 import "package:nexus/helpers/extensions/get_headers.dart";
+import "package:nexus/helpers/extensions/get_localpart.dart";
 import "package:nexus/helpers/extensions/mxc_to_https.dart";
 import "package:nexus/helpers/extensions/show_context_menu.dart";
+import "package:nexus/helpers/extensions/show_user_popover.dart";
 import "package:nexus/helpers/launch_helper.dart";
 import "package:nexus/models/content/avatar.dart";
 import "package:nexus/models/content/content.dart";
 import "package:nexus/models/content/encrypted.dart";
+import "package:nexus/models/content/membership.dart";
 import "package:nexus/models/content/message.dart";
 import "package:nexus/models/event.dart";
+import "package:nexus/models/membership_status.dart";
 import "package:nexus/widgets/chat_page/expandable_image.dart";
 import "package:nexus/widgets/chat_page/html/html.dart";
 import "package:nexus/widgets/chat_page/lazy_loading/message_avatar.dart";
@@ -290,6 +294,36 @@ class RenderEvent extends ConsumerWidget {
           ),
         ],
       ),
+      MembershipContent content => Row(
+        spacing: 4,
+        children: [
+          SizedBox(width: 4),
+          Icon(Icons.people),
+          InkWell(
+            onTapUp: (details) => context.showUserPopover(
+              content,
+              event.sender,
+              globalPosition: details.globalPosition,
+            ),
+            child: Text(
+              content.displayName ?? event.stateKey!.localpart,
+              style: TextStyle(
+                color: theme.colorScheme.primary,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+          Text(
+            "${switch (content.status) {
+              MembershipStatus.invite => "was invited to",
+              MembershipStatus.join => "joined",
+              MembershipStatus.leave => event.sender == event.stateKey ? "left" : (event.unsigned["prev_content"]?["membership"] == "ban" ? "was unbanned from" : "was kicked from"),
+              MembershipStatus.ban => "was banned from",
+              MembershipStatus.knock => "asked to join",
+            }} the room. ${content.reason ?? ""}",
+          ),
+        ],
+      ),
       AvatarContent() => Row(
         spacing: 4,
         children: [