docs: add MIT license

Author: DaleSeo

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 DaleStudy
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -43,3 +43,9 @@
     <img src="https://raw.githubusercontent.com/DaleStudy/.github/main/sponsorkit/sponsors.svg" alt="Sponsors" />
   </a>
 </p>
+
+## 라이선스 (License)
+
+이 저장소의 소스 코드는 [MIT 라이선스](LICENSE)를 따릅니다.
+
+다만 달레 스터디의 이름과 로고를 비롯한 브랜드 자산은 라이선스 범위에 포함되지 않습니다.