create table user, and fix table session

internal/store/migrations/7.sql

@@ -0,0 +1,11 @@
+create table user (login text primary key, password text, role text);
+
+drop table session;
+
+create table session (
+    token text primary key,
+    user text,
+    expiration text
+);
+
+pragma user_version = 7;