Added some skeletal documentation config

.prettierrc

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+{
+  "proseWrap": "always"
+}

docs/index.md

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+# Macrostrat Python libraries
+
+Welcome to the documentation for the Macrostrat monorepo! This repository
+contains various Python libraries developed by the Macrostrat team. These
+libraries are designed to provide functionality that can be used across
+geoscience software products and applications.
+
+## Libraries
+
+- [`macrostrat.app-frame`](app-frame): A skeleton to scaffold application
+  control scripts
+- [`macrostrat.database`](database): Tools to maintain "database-driven"
+  applications, especially PostgreSQL and PostGIS
+- [`macrostrat.dinosaur`](dinosaur): A library for database schema evolution
+- [`macrostrat.utils`](utils): A collection of utility functions
+- [`macrostrat.package-tools`](package-tools): Tools for managing Python
+  packages

mkdocs.yml

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+site_name: Macrostrat Python libraries
+theme:
+  name: "material"
+nav:
+  - Home: "index.md"
+  - Macrostrat:
+      - App Frame: "macrostrat/app_frame.md"
+      - Database: "macrostrat/database.md"
+      - Dinosaur: "macrostrat/dinosaur.md"
+      - Package Tools: "macrostrat/package_tools.md"
+      - Utils: "macrostrat/utils.md"
+
+plugins:
+  - search
+  - mkdocstrings