[Feature Request] Add ability to select in floating mode

[hakan-demirli]

Select text between two labels. Sioyek has a similar feature.

Explanation

• For a given page:

• Enter the floating mode

• Specify two labels

• The text/area between them is selected

Implementation

• If you drag the mouse while holding down click from the beginning of the first label to the end of the another, it should work.