Chipstream

- ref: use dcnum methods to set environment variables for single threads
- setup: bump dcnum from 0.25.2 to 0.25.3

- docs: fix typo in CLI help page
- setup: bump dcnum from 0.25.0 to 0.25.2 (minor speed-up)
- setup: support numpy 2

- enh: automatically detect flickering and apply offset correction
- setup: bump dcnum from 0.24.0 to 0.25.0 (flickering detection)

- feat: implement segmenter validation step in CLI and GUI
- feat: support PyTorch segmentation models
- fix: show correct default mask postprocessing arguments in CLI help
- setup: bump dcnum from 0.22.1 to 0.24.0 (internal basins)
- setup: change required pytorch version from 2.3 to 2.2 (hardware support)

- setup: bump dcnum from 0.20.1 to 0.22.1

- enh: make chipstream.gui and chipstream.cli executable as a package