[feature]install qt6_dev version

[xiaoyifang]

Is your feature request related to a problem? Please describe.
there is a dev version ,see the following image.

aqt does not support to install this version

aqt list-qt linux desktop --arch dev
ERROR   : Invalid version: 'dev'! Please use the form '5.X.Y'.

Describe the solution you'd like
treat dev as valid version.

Describe alternatives you've considered
none

Additional context

[ddalcino]

What’s the use case for this?

The obvious problem with this is that the Qt devs frequently release updates to dev, and each update can potentially make breaking changes that would result in a broken installation. It would not be clear that we need to make changes until after it breaks. I expect that it would be a lot of effort to support this.

If we agree to add this, I think we have to declare up front that we don’t support it and there’s a good chance it will result in a broken installation.

[miurahr]

In some development project such as language binding and plugin library development, it may be useful to check development version to detect incompatibility.
It is not a generic use case.

I'd like to ask @xiaoyifang to explain an use case.

[xiaoyifang]

there are always some bugs in qt's released version which affect a good user experience, such as qmultimedia module is buggy from qt6.4.0-qt6.4.2.

I think qt6_dev maybe a last resort to try.though this request is not in emergency.