[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