Include ThirdPartyNotices file in Nuget package

NOTICE

@@ -1,5 +1,48 @@
+THIRD-PARTY SOFTWARE NOTICES AND INFORMATION
+
+This software incorporates components from the projects listed below. The original copyright notices
+and the licenses under which Microsoft received such components are set forth below and are provided for 
+informational purposes only. Microsoft reserves all rights not expressly granted herein, whether by 
+implication, estoppel or otherwise.
+
 This software includes parts of the BLAKE2 library (https://github.com/BLAKE2/BLAKE2).
 The BLAKE2 library is licensed under CC0 Universal, version 1.0. You can find a copy of this license at https://creativecommons.org/publicdomain/zero/1.0/legalcode
 
 This software includes parts of the Kyber library (https://github.com/pq-crystals/kyber).
 The Kyber library is licensed under CC0 Universal, version 1.0. You can find a copy of this license at https://creativecommons.org/publicdomain/zero/1.0/legalcode
+
+This software includes parts of the ZSTD library, version 1.4.5 (https://github.com/facebook/zstd):
+ZSTD NOTICES AND INFORMATION BEGIN HERE
+===============================================================================
+BSD License
+
+For Zstandard software
+
+Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+ * Neither the name Facebook nor the names of its contributors may be used to
+   endorse or promote products derived from this software without specific
+   prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+===============================================================================
+END OF ZSTD NOTICES AND INFORMATION

dotnet/nuget/SEALNet-multi.nuspec.in

@@ -36,5 +36,6 @@
     <file src="../../build/bin/dotnet/ios/$configuration$/netstandard2.0/SEALNet.dll" target="lib/Xamarin.iOS10/" />
     <file src="../../build/bin/dotnet/ios/$configuration$/SEALNet.xml" target="lib/Xamarin.iOS10/" />
     <file src="../../LICENSE" target="LICENSE" />
+    <file src="../../NOTICE" target="/ThirdPartyNotices" />
   </files>
 </package>

dotnet/nuget/SEALNet.nuspec.in

@@ -29,5 +29,6 @@
     <file src="@CMAKE_RUNTIME_OUTPUT_DIRECTORY@/dotnet/$configuration$/netstandard2.0/SEALNet.dll" target="lib/netstandard2.0/" />
     <file src="@CMAKE_RUNTIME_OUTPUT_DIRECTORY@/dotnet/$configuration$/SEALNet.xml" target="lib/netstandard2.0/" />
     <file src="../../LICENSE" target="LICENSE" />
+    <file src="../../NOTICE" target="/ThirdPartyNotices" />
   </files>
 </package>