add build instructions for Qt 5.0.0+ on Windows and Debian.

[D-0000000000]

qbittorrent/qBittorrent#21603

[brookhong]

The instructions in Compilation-Windows-MSVC-Qt6.md helps me to build successfully in Windows, vote👍 for merge.

[Thoragh]

The debian instructions will only work on debian testing. Both the Qt and libboost versions are to old on Debian Bookworm.

[D-0000000000]

The debian instructions will only work on debian testing. Both the Qt and libboost versions are to old on Debian Bookworm.

Yes, I only mentioned libtorrent-rasterbar. I missed boost and Qt6. I made a edit and move them to the beginning.

I also have a question if guide for debian should be merged to Compilation-Debian,-Ubuntu,-and-derivatives.md. The only difference is dependencies so merge is possible. But trixie is not released officially yet, maybe merging is not a good idea for now?

[dyseg]

Maybe an info, in Compilation-Windows-MSVC-Qt6.md it is commented that:

list(APPEND _qarg_OPTIONS "-DQT_FEATURE_cxx20:BOOL=ON")
list(APPEND _qarg_OPTIONS "-DQT_DISABLE_DEPRECATED_UP_TO=0x060500")
...
current Qt6 on vcpkg is Qt 6.7.3. This patch may not be need or not applicable in later version of Qt

It still necessary with Qt 6.8.3 from vcpkg.