Modernized cmake file, build qhexview as static library.

[dev-0x7C6]

Hi,

I used new cmake approach (well not that new anymore) to make components.

After that change it can be used like below:

add_subdirectory("library/qhexview")
target_link_libraries(your-application-target PRIVATE qhexview-lib)

Regards, Bartłomiej

[Dax89]

Thanks! :rocket: