Fix Noble Debian Packaging.

[alexmucde]

Remove Focal Debian Configuration.

[alexmucde]

Not the final version, but fixies some issues.

Still open issues:

• DLT Viewer crashes when terminated
• Plugins not automatically found, need to set Plugins path manually
• No Icon visible

[vifactor]

@alexmucde actually before these changes, plugins were found automatically (at least on my machine)

[vifactor]

@alexmucde is there any specific reason why you decided to place those OSS plugins into /usr/share instead of /user/bin? this actually broke their discoverability. It is of course possible to fix, but I have hard time to come up with nice solution

[alexmucde]

@vifactor This was the place where they plugins were before with qmake and qt5. /usr/bin/plugins is not a good place in a Linux system. /usr/share/dlt-viewer/plugins should be the right one. With Qt5 it was finding the plugins, but with qt6 it does not find them anymore. Need to fix it in the source code.

[alexmucde]

@vifactor

It uses the Path

#ifndef PLUGIN_INSTALLATION_PATH
#define PLUGIN_INSTALLATION_PATH ""
#endif

It was set before with qmake. We must set it also with cmake.

In Windows it must be "plugins" and in Linux "/usr/share/dlt-viewer/plugins"

Or i hard code it in the source code dependent on Linux or Windows? MacOs must be also considered?

[vifactor]

I know about that variable and how it was passed via qmake. It is just I found only messy ways to fix the plugins discovery, because as you correctly point out, cmake is used by other OSs so it is tricky to make it right and not break things (which are not tested on CI)