Update napari-DLC docs for refactor by C-Achard · Pull Request #3280 · DeepLabCut/DeepLabCut

Create two new napari-DLC documentation pages (docs/gui/napari/basic_usage.md and docs/gui/napari/advanced_usage.md) containing usage instructions, workflows, shortcuts, and feature descriptions for the plugin. Update _toc.yml to expose the basic_usage page under the napari_GUI section so the new docs appear in the site navigation. Frontmatter on the new files sets last_updated metadata.

napari-DLC docs basic usage

Include the napari advanced usage page in the documentation table of contents and add named anchors to both basic and advanced napari docs for stable cross-referencing. This ensures the pages appear in the nav and can be linked reliably from other docs.

Replace legacy internal references to the napari docs with a new landing-page target and simplify the napari GUI doc. Updated links in labeling.md, PROJECT_GUI.md, maDLC_UserGuide.md, and standardDeepLabCut_UserGuide.md to point to file:napari-gui-landing. Reworked docs/gui/napari_GUI.md into a concise landing page (file:napari-gui-landing) with a table of contents and links to installation, basic usage, and advanced features to better organize napari-related guidance.