starts adding documentation for digifeeds cli

aim/cli/digifeeds.py

@@ -1,4 +1,5 @@
 import typer
+from typing_extensions import Annotated
 from aim.digifeeds.add_to_db import add_to_db as add_to_digifeeds_db
 from aim.digifeeds.list_barcodes_in_bucket import list_barcodes_in_bucket
 from aim.digifeeds.database import models, main
@@ -10,7 +11,19 @@
 
 
 @app.command()
-def add_to_db(barcode: str):
+def add_to_db(
+    barcode: Annotated[
+        str,
+        typer.Argument(help="The barcode to be added to the database"),
+    ],
+):
+    """
+    Add a barcode to the *Digifeeds Database* and then to the Alma Digifeeds Set
+
+    If the barcode is in the database fetch it and then try to add it to the
+    Digifeeds set in Alma. If the barcode isn't found in Alma, print an error.
+    Print whether or not the item is added to the digifeeds set.
+    """
     print(f'Adding barcode "{barcode}" to database')
     item = add_to_digifeeds_db(barcode)
     if item.has_status("not_found_in_alma"):

aim/cli/main.py

@@ -2,7 +2,9 @@
 import aim.cli.digifeeds as digifeeds
 
 app = typer.Typer()
-app.add_typer(digifeeds.app, name="digifeeds")
+app.add_typer(
+    digifeeds.app, name="digifeeds", help="Commands related to the digifeeds process"
+)
 
 
 if __name__ == "__main__":  # pragma: no cover