refactor: enable model configuration on default group (close #143)

bin/migration_v0.3-v0.4.sql

@@ -0,0 +1,17 @@
+INSERT INTO abilities (`group`, model, channel_id, enabled)
+SELECT c.`group`, m.model, c.id, 1
+FROM channels c
+CROSS JOIN (
+    SELECT 'gpt-3.5-turbo' AS model UNION ALL
+    SELECT 'gpt-3.5-turbo-0301' AS model UNION ALL
+    SELECT 'gpt-4' AS model UNION ALL
+    SELECT 'gpt-4-0314' AS model
+) AS m
+WHERE c.status = 1
+  AND NOT EXISTS (
+    SELECT 1
+    FROM abilities a
+    WHERE a.`group` = c.`group`
+      AND a.model = m.model
+      AND a.channel_id = c.id
+);