Add project configuration and initial documentation files

- Introduced `archdoc.toml` configuration file for project settings, including scanning and analysis options.
- Created initial `ARCHITECTURE.md` file with project summary and structure.
- Generated documentation files for source files and modules, including placeholders for future content.
- Updated the documentation generation logic to handle new project structure and file paths.

test-project/docs/architecture/modules/._src___init__.py.md

@@ -0,0 +1,3 @@
+# Module: ./src/__init__.py
+
+TODO: Add module documentation