Add license and notice

LICENSE

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+MIT License
+
+Copyright (c) 2015 Robots 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.

NOTICE

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+Robots uses third-party libraries or other resources that may be
+distributed under licenses different than the Robots software.
+
+In the event that we accidentally failed to list a required notice, please
+bring it to our attention.
+
+ROS-Industrial Support for Universal Robots (BSD, 3-Clause)
+* Copyright (с) Felix Messmer, Kelsey Hawkins, Shaun Edwards, Stuart Glaser, Wim Meeussen
+* https://opensource.org/licenses/BSD-3-Clause
+
+JavaKUKA (MIT)
+* Copyright (c) 2018 Hao Hua
+* https://github.com/whitegreen/JavaKUKA/blob/master/LICENSE
+
+ABB PC SDK
+* Copyright (c) 2021 ABB
+* https://developercenter.robotstudio.com/pc-sdk
+
+Convertalot
+* Copyright (c) 2004 Stephen R. Schmitt
+* http://www.convertalot.com/
+
+Euclidean Space
+* Copyright (c) 1998-2021 Martin John Baker
+* http://www.euclideanspace.com/