Remove flutter chat (#26)

Had to squash merge manually as Forgejo was erroring

lib/widgets/renderers/generic_event.dart

@@ -0,0 +1,22 @@
+import "package:flutter/material.dart";
+
+class GenericEventRenderer extends StatelessWidget {
+  final IconData icon;
+  final List<Widget> children;
+  const GenericEventRenderer(this.icon, this.children, {super.key});
+
+  @override
+  Widget build(BuildContext context) => Padding(
+    padding: EdgeInsets.only(bottom: 8),
+    child: Row(
+      spacing: 8,
+      children: [
+        Padding(
+          padding: EdgeInsets.symmetric(horizontal: 4),
+          child: Icon(Icons.people),
+        ),
+        Expanded(child: Wrap(spacing: 4, children: children)),
+      ],
+    ),
+  );
+}