feat: add cli entrypoint

Author: nullswan

pytemplate/__init__.py

@@ -1,3 +1,6 @@
-"""Init file."""
+"""Init file.
+
+Called when you import pytemplate.
+"""
 
 from pytemplate.main import main  # noqa

pytemplate/__main__.py

@@ -0,0 +1,9 @@
+"""Entry point of the CLI version.
+
+Called from poetry.
+"""
+
+from .main import main
+
+if __name__ == '__main__':
+    main()

pytemplate/main.py

@@ -1,4 +1,7 @@
-"""Main."""
+"""Main.
+
+You can directly import the main function in your code.
+"""
 
 
 def main() -> None: