`pathlib.Path.move()` consumes too much disk space

[barneygale]

Bug report

Bug description:

pathlib.Path.move() and move_into() (new in 3.14+) currently perform a complete copy before deleting any source files, which can consume a lot of disk space. It might be better if they removed source files/directories as the copy operation progresses.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• GH-132566: Add pathlib.Path.info.is_junction() #132569