Prepare models for new chat feature

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

chat/admin.py

@@ -0,0 +1,22 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.contrib import admin
+
+from .models import Channel, Message
+
+
+@admin.register(Channel)
+class ChannelAdmin(admin.ModelAdmin):
+    list_display = ('name', 'permission_type', 'tournament', 'pool', 'team',)
+    list_filter = ('permission_type', 'tournament',)
+    search_fields = ('name', 'tournament__name', 'team__name', 'team__trigram',)
+    autocomplete_fields = ('tournament', 'pool', 'team', )
+
+
+@admin.register(Message)
+class MessageAdmin(admin.ModelAdmin):
+    list_display = ('channel', 'author', 'created_at', 'updated_at', 'content',)
+    list_filter = ('channel', 'created_at', 'updated_at',)
+    search_fields = ('author__username', 'author__first_name', 'author__last_name', 'content',)
+    autocomplete_fields = ('channel', 'author',)