Update documentation and readme

[codingjoe]

No description provided.

[Copilot]

Pull request overview

This PR modernizes the project's documentation infrastructure by migrating from reStructuredText (RST) to Markdown format for the README, adding custom light/dark theme logos, and consolidating build configurations.

• Migrated README from RST to Markdown format with improved formatting and GitHub-native features
• Added SVG logos with light and dark theme variants
• Removed obsolete configuration files (setup.cfg, linter-requirements.txt, MANIFEST.in, SECURITY.md)

Reviewed changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
setup.cfg	Removed flake8 configuration (likely moved to pyproject.toml or no longer needed)
pyproject.toml	Updated readme reference from RST to MD format; added furo Sphinx theme dependency
linter-requirements.txt	Removed separate linter dependencies file (consolidated elsewhere)
images/logo-light.svg	Added new light theme logo for the project
images/logo-dark.svg	Added new dark theme logo for the project
docs/index.rst	Updated to display theme-appropriate logos instead of including README
docs/conf.py	Added furo as the HTML theme for Sphinx documentation
SECURITY.md	Removed Tidelift security contact information
README.rst	Removed old reStructuredText README file
README.md	Added new Markdown README with badges, logos, and improved formatting
MANIFEST.in	Removed manifest file (likely no longer needed with modern build tools)

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