add LICENSE file for pip package

Author: arun3688

LICENSE

@@ -0,0 +1,26 @@
+ This project is part of OpenModelica.
+
+ Copyright (c) 1998-CurrentYear, Open Source Modelica Consortium (OSMC),
+ c/o Linköpings universitet, Department of Computer and Information Science,
+ SE-58183 Linköping, Sweden.
+
+ All rights reserved.
+
+ THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THE BSD NEW LICENSE OR THE
+ GPL VERSION 3 LICENSE OR THE OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.2.
+ ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES
+ RECIPIENT'S ACCEPTANCE OF THE OSMC PUBLIC LICENSE OR THE GPL VERSION 3,
+ ACCORDING TO RECIPIENTS CHOICE.
+
+ The OpenModelica software and the OSMC (Open Source Modelica Consortium)
+ Public License (OSMC-PL) are obtained from OSMC, either from the above
+ address, from the URLs: http://www.openmodelica.org or
+ http://www.ida.liu.se/projects/OpenModelica, and in the OpenModelica
+ distribution. GNU version 3 is obtained from:
+ http://www.gnu.org/copyleft/gpl.html. The New BSD License is obtained from:
+ http://www.opensource.org/licenses/BSD-3-Clause.
+
+ This program is distributed WITHOUT ANY WARRANTY; without even the implied
+ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, EXCEPT AS
+ EXPRESSLY SET FORTH IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE
+ CONDITIONS OF OSMC-PL.

pyproject.toml

@@ -13,7 +13,7 @@ authors = [
 maintainers = [
     {name = "Adeel Asghar", email = "adeel.asghar@liu.se"},
 ]
-license = "BSD-3-Clause OR LicenseRef-OSMC-PL-1.2 OR GPL-3.0-only"
+license = { file = "LICENSE" }
 requires-python = ">=3.10"
 dependencies = [
     "numpy",