Version detection of TVII GraphicsDriver in Qt Creator is shaky

In Qt Creator, the version detection of Traveo II Graphics Driver version (for MCU kits) is very shaky. The logic only expects to find the version number encoded as "Vx.x.x" in the installation folder name of the Graphics Driver. Since this is not automatically added by the Graphics Driver Installer, it's highly unlikely that users would include the version number in their installation folder name. This results in Qt Creator always warning the user that the expected version has not been found, resulting in confusion:

Instead we should read the version number in the "README_SDK.txt" file, which seems to always be present in the GraphicsDriver installation folder.