Ship more graphics tools with Qt for Python

Qt for Python comes with tools like Qt Designer, lrelease + lupdate, and qmltyperegistrar.

However, Python projects would also benefit from tools like:

• Qt Shader Baker: Converts shader code into our own *.qsb files
• Balsam: Converts 3rd-party 3D asset files into our own *.mesh + *.qml files

(These are 2 tools that customers have asked about. I haven't look at others – it would be good to comprehensively go through all tools shipped by C++ Qt and see which ones are worth shipping with Qt for Python)