New CamiTK 6.0.0 release

Dear all,

CamiTK 6.0.0 was released upstream and I have updated the package on salsa.

The package was broken and removed from Testing due to VTK version 
change and switch from Qt5 to Qt6. CamiTK 6 fixes those issues.

After a number of iterations the pipeline builds the package, but the 
piuparts and blhc steps still fail.

I tried to correct the piuparts issue by adding Breaks and Replaces in 
the debian/control file but I probably forgot something.

As for blhc, it complains about missing compilation flags for a very 
specific case: some of our tests are creating an extension to our 
software, compile this extension and try to load it. These files are 
compiled during execution of tests, so they do not receive the same 
compilation flags as the software itself. Is there a way to specify that 
these errors can be ignored safely ?

Obviously I did not tag the master branch with the debian/6.0.0 tag, as 
the pipeline did not complete successfully.

Can someone please have a look ?

Thank you in advance for your feedback.

Best regards,

Manik Bhattacharjee.