qt-python: Introduce a new command for PySide6 installation #258
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This commit adds the
qt-python.installPySide6command.It first checks the installation status of PySide6 and then shows a picker for the user to select which version they would like to install.
The first item allows installation from PyPI.
Picker can also include local installation sources under
<Qt installation root>/QtForPython.This UI construction is similar to that of Qt Creator.
If no virtual environment is selected, a popup will appear guiding the user to create or select a virtual environment first.