feat: dtos for wishList service;

feat: validator for guid;
feat: created interface for wishlist service

sqlc/schema.sql

@@ -111,7 +111,7 @@ CREATE TABLE IF NOT EXISTS "wishes" (
   id BIGSERIAL PRIMARY KEY,
   guid UUID UNIQUE NOT NULL DEFAULT gen_random_uuid(),
   wish_list_id BIGINT UNIQUE NOT NULL REFERENCES wish_lists(id) ON DELETE CASCADE,
-  name VARCHAR(32) NOT NULL DEFAULT 'New wish',
+  name VARCHAR(64) NOT NULL DEFAULT 'New wish',
   description VARCHAR(1000) NOT NULL DEFAULT '',
   picture_url VARCHAR(512) NOT NULL DEFAULT '',
   stars SMALLINT NOT NULL DEFAULT 3 CHECK (stars BETWEEN 1 AND 5),