debian/: Switch to use gcc-14

[sobkas]

Switch to use gcc-14
Depends on: #1667

[Xottab-DUTY]

Not that long ago I find out that we already have DEB package specs – they are being generated by CMake. If I understand correctly.
That means we have code/logic duplication and, what's worse, these manually created specs are different from what CMake generates.
Are there any disadvantages if we just delete debian folder and move all that logic to CMake files?

[sobkas]

Static debian/ folder allows me to compile debian packages using my existing infrastructure.
Also debian/ dir is simpler to maintain than CMake.