Cleanup unnecessary files in the release zip files

[SkowronskiAndrew]

We are packaging more files than necessary into our release zip files.

for example in UnityDataTool-windows-x64-1.3.3

      46992 Analyzer.pdb
    1759232 e_sqlite3.dll
      13032 ReferenceFinder.pdb
      13800 TextDumper.pdb
      17308 UnityBinaryFormat.pdb
   72783826 UnityDataTool.exe
      17320 UnityDataTool.pdb
      18380 UnityFileSystem.pdb
     590336 UnityFileSystemApi.dll
     600688 UnityFileSystemApi.dylib
    1739616 UnityFileSystemApi.so

For windows we only need the .dll and .exe. The .so and dylib are for other platforms. The pdb files seem like they won't be useful because they refer to libraries inside UnityDataTool.exe

Fixing this won't make a substantial change in the size of the release but will make the output more professional and tidy.