create default avatar, admin, and deleted user on first run

app/models.py

@@ -1 +1,25 @@
 from .db import Model
+
+class Users(Model):
+    table = "users"
+
+class Topics(Model):
+    table = "topics"
+
+class Threads(Model):
+    table = "threads"
+
+class Posts(Model):
+    table = "posts"
+
+class PostHistory(Model):
+    table = "post_history"
+
+class Sessions(Model):
+    table = "sessions"
+
+class Avatars(Model):
+    table = "avatars"
+
+class Subscriptions(Model):
+    table = "subscriptions"