Add Python export options and docs

[eviltester]

Closes #14

[Copilot]

Pull request overview

Adds Python as a first-class “code” export format across the app UI, generator UI, exporter pipeline, tests, and documentation (Closes #14).

Changes:

• Implement Python export convertor + options model, and wire it into Exporter/file types.
• Add Python options panel and surface Python in the app “Code” tab + generator “-- Code --” export group.
• Add Python-focused tests and new documentation pages/blog post.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tests/utils/options-python-panel.test.js	Adds unit tests for the new Python options panel UI bindings.
tests/data_formats/python-convertor.test.js	Adds unit tests for Python export formatting and option behaviors.
js/gui_components/tabbed-text-control.js	Adds Python as a “Code” subtab alongside JavaScript.
js/gui_components/options_panels/options-python-panel.js	Implements the Python export options panel UI.
js/gui_components/import-export-controls.js	Registers the Python options panel in the main app export controls.
js/gui_components/data-generator-page.js	Adds Python to generator options panels and groups code exporters under a “-- Code --” optgroup.
js/grid/exporter.js	Registers Python options + convertor in the exporter pipeline.
js/data_formats/python-convertor.js	Introduces Python export logic and option handling.
js/data_formats/file-types.js	Adds .py file extension mapping for Python exports.
docs-src/docs/030-data-formats/python/options.md	Adds documentation for Python export options.
docs-src/docs/030-data-formats/python/010-python.md	Adds documentation overview for the Python data format export.
docs-src/blog/2026-04-28-more-programming-language-exports.md	Adds a draft release blog post announcing language-style exports + Python.