* Rename cli/ to unsloth_cli/ to fix namespace collision with stringzilla
stringzilla installs a namespace package at cli/ (cli/split.py, cli/wc.py)
in site-packages without an __init__.py. When unsloth is installed as an
editable package (pip install -e .), the entry point script does
`from cli import app` which finds stringzilla's namespace cli/ first and
fails with `ImportError: cannot import name 'app' from 'cli'`.
Non-editable installs happened to work because unsloth's cli/__init__.py
overwrites the namespace directory, but this is fragile and breaks if
stringzilla is installed after unsloth.
Renaming to unsloth_cli/ avoids the collision entirely and fixes both
editable and non-editable install paths.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* Update stale cli/ references in comments and license files
---------
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
