Add --no-untracked option to git cl status

[BHFock]

Description:

Adds a new --no-untracked flag to git cl status that hides untracked files (??) from the output.

By default, git cl status lists every untracked file individually (using git status --untracked-files=all), which differs from git status's default behaviour and can clutter the output in repositories with many untracked files. The new flag passes --untracked-files=no to Git, suppressing untracked files entirely.

The flag is orthogonal to --all — they can be combined to show all uncommon status codes except untracked files.

Default behaviour is unchanged: untracked files are still shown unless --no-untracked is explicitly passed.

Example:

$ git cl status
No Changelist:
  [??] notes/draft.md
  [ M] src/core.py

$ git cl status --no-untracked
No Changelist:
  [ M] src/core.py

Changes:

• New --no-untracked flag on the status subcommand
• New include_untracked parameter on clutil_get_file_status_map (default True, preserves existing behaviour for all other callers)
• clutil_get_git_status now passes --untracked-files=no explicitly when untracked files are not requested

Version bumped to 1.1.7