Refactor documentation workflow to build and deploy site to a dedicated branch, and remove outdated docs.

docs/index.md

@@ -1,27 +0,0 @@
-# prettymaps
-
-A minimal Python library to draw pretty maps from OpenStreetMap data.
-
-- [Usage](usage.md)
-- [API Reference](api.md)
-
-## Features
-- Draw beautiful maps from OSM data
-- Highly customizable layers and styles
-- Preset management
-- Keypoint highlighting
-
-## Installation
-```bash
-pip install prettymaps
-```
-
-## Quick Example
-```python
-import prettymaps
-prettymaps.plot("Porto Alegre")
-```
-
----
-
-Data © OpenStreetMap contributors