test: queries for sqlc generate

queries/users.sql

@@ -0,0 +1,11 @@
+-- name: FindAllUsers :many
+SELECT * FROM users;
+
+-- name: InsertUser :one
+INSERT INTO users (
+    email, full_name, password_hash, is_admin
+) VALUES (
+    $1, $2, $3, $4
+)
+RETURNING id;
+