Windows Compiled exe

add constants for the window width and height (#32)

* add constants for the window width and height

Signed-off-by: Jelte Dirks <j.dirks@outlook.com>

* fixed glviewport not scaling with window

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Signed-off-by: Jelte Dirks <j.dirks@outlook.com>
Co-authored-by: braggs <emielvdbrink@gmail.com>