chore(root): renameproject to config and update configuration files

Enhancements:
- Rename project name from "." to "config" in .djinit and .env.sample
- Update DJANGO_SETTINGS_MODULE references from core to config
- Adjust Procfile, justfile, manage.py, and pyproject.toml to reference config
- Refactor README to reflect new folder layout under config/
- Remove LICENSE file

pyproject.toml

@@ -41,4 +41,4 @@ ignore = [
 ]
 
 [tool.ruff.lint.isort]
-known-first-party = ["core"]
+known-first-party = ["config"]