support drawing horizontal/vertical lines

[takenori-y]

No description provided.

[Copilot]

Pull request overview

This PR extends the SPTK draw CLI tools to support drawing additional guide lines (horizontal/vertical) and centralizes grid/guide-related CLI arguments in the shared draw utilities.

Changes:

• Added shared CLI flags for grid and horizontal/vertical guide lines (including style/color/width) via get_default_parser().
• Updated multiple draw commands to remove their local -g definition and to render -hline/-vline guides on the Plotly figure.
• Disabled the new grid/guide options for gspecgram via allow_grid=False.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/draw/sptk/draw_utils.py	Adds shared argparse options for grid and horizontal/vertical guide lines; extends get_default_parser() signature.
src/draw/gwave.py	Uses shared -g and adds rendering for -hline/-vline guide lines.
src/draw/gspecgram.py	Explicitly disables shared grid/guide options (allow_grid=False).
src/draw/gseries.py	Uses shared -g and adds rendering for -hline/-vline guide lines.
src/draw/grlogsp.py	Uses shared -g and adds rendering for -hline/-vline guide lines.
src/draw/gpolezero.py	Uses shared -g and adds rendering for -hline/-vline guide lines.
src/draw/glogsp.py	Uses shared -g and adds rendering for -hline/-vline guide lines.
src/draw/fdrw.py	Uses shared -g and adds rendering for -hline/-vline guide lines.

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