chore(license): Change license from GPL-3 to MIT (#4339)

* Change license from GPL-3 to MIT

Updated the project license from GPL-3 to MIT in DESCRIPTION, LICENSE, LICENSE.md, README.md, and package.json. Added LICENSE.md with the MIT license text and updated .Rbuildignore to exclude LICENSE.md from builds.

* `npm run build` (GitHub Actions)

* Update LICENSE and add LICENSE.note

Replaced the LICENSE file content with a summary including year and copyright holder. Moved detailed third-party license information to a new LICENSE.note file.

* Remove R check log file

Deleted the ..Rcheck/00check.log file, likely to clean up generated or temporary files from the repository.

Author: karangattu

.Rbuildignore

@@ -34,3 +34,4 @@
 ^.claude$
 ^README-npm\.md$
 ^CRAN-SUBMISSION$
+^LICENSE\.md$

DESCRIPTION

@@ -69,7 +69,7 @@ Description: Makes it incredibly easy to build interactive web
     applications with R. Automatic "reactive" binding between inputs and
     outputs and extensive prebuilt widgets make it possible to build
     beautiful, responsive, and powerful applications with minimal effort.
-License: GPL-3 | file LICENSE
+License: MIT + file LICENSE
 URL: https://shiny.posit.co/, https://github.com/rstudio/shiny
 BugReports: https://github.com/rstudio/shiny/issues
 Depends:

LICENSE

@@ -0,0 +1,21 @@
+# MIT License
+
+Copyright (c) 2025 shiny authors
+
+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.

LICENSE.md

@@ -61,7 +61,7 @@ We welcome contributions to the **shiny** package. Please see our [CONTRIBUTING.
 
 ## License
 
-The shiny package as a whole is licensed under the GPLv3. See the [LICENSE](LICENSE) file for more details.
+The shiny package as a whole is licensed under the MIT License. See the [LICENSE](LICENSE) file for more details.
 
 ## R version support