add user login sessions

sqlite/query.sql

@@ -87,6 +87,12 @@ SET
   ,salt = ?
 WHERE id = ?;
 
+-- name: CreateNewSession :exec
+INSERT INTO user_sessions (id, user_id, created_at) VALUES (?, ?, ?);
+
+-- name: GetSession :one
+SELECT id, user_id, created_at FROM user_sessions WHERE user_id = ?;
+
 -- name: GetUserRenew :many
 SELECT
     id