Move from fbs to cx_Freeze about qtpyhammer HOT 5 CLOSED

fbs has been removed from dependencies, now all that remains is to write & test a build script.

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Unsure how to get build script to recognise internal packages / modules.
Need to read more of the cx_Freeze documentation.

Should also test a single file build script, tests/prototypes/qt_gl_render_manager.py should make a good test subject.

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Compiling on win10, Linux will need to Qt5.15 compiled from source
official guide
alternative guide

turns out internal modules and packages are added automatically
however the entirety of each pachake (with .py replaced with .pyc) is included in the build
Qt5 takes up about 200MB, a majority of most included

this also includes the QtPyHammer directory, shaders & all
so they should be moved out of this folder and located relative to the .exe, not the libraries included in releases

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It's probably time to have a QSettings for configs that locates the .fgd & compilers (Compilepal)

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Still need to get test Linux & Mac compiles (as ever)
Compile sizes do need some zealous reduction too (lots of excludes)
But this at this point I'd consider cx_Freeze as having fully replaced fbs

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