feat: provider key policies and user provider settings (#23751)

coderd/database/queries/userchatproviderkeys.sql

@@ -0,0 +1,20 @@
+-- name: GetUserChatProviderKeys :many
+SELECT * FROM user_chat_provider_keys WHERE user_id = @user_id ORDER BY created_at ASC, id ASC;
+
+-- name: UpsertUserChatProviderKey :one
+INSERT INTO user_chat_provider_keys (user_id, chat_provider_id, api_key, api_key_key_id)
+VALUES (@user_id, @chat_provider_id, @api_key, sqlc.narg('api_key_key_id')::text)
+ON CONFLICT (user_id, chat_provider_id) DO UPDATE SET
+    api_key = @api_key,
+    api_key_key_id = sqlc.narg('api_key_key_id')::text,
+    updated_at = NOW()
+RETURNING *;
+
+-- name: UpdateUserChatProviderKey :one
+UPDATE user_chat_provider_keys
+SET api_key = @api_key, api_key_key_id = sqlc.narg('api_key_key_id')::text, updated_at = NOW()
+WHERE user_id = @user_id AND chat_provider_id = @chat_provider_id
+RETURNING *;
+
+-- name: DeleteUserChatProviderKey :exec
+DELETE FROM user_chat_provider_keys WHERE user_id = @user_id AND chat_provider_id = @chat_provider_id;