Allow alias to have help=

Author: akb

src/mario/aliasing.py

@@ -101,7 +101,8 @@ def make(self, validated, partial, many):
 @attr.dataclass
 class Alias:
     name: str
-    short_help: str
+    short_help: t.Optional[str]
+    help: t.Optional[str]
     arguments: t.List[click.Argument]
     options: t.List[click.Option]
     stages: t.List[AliasStage]
@@ -110,7 +111,8 @@ class Alias:
 
 class AliasSchema(marshmallow.Schema):
     name = fields.String()
-    short_help = fields.String(default=None)
+    help = fields.String(default=None, missing=None)
+    short_help = fields.String(default=None, missing=None)
     arguments = fields.List(fields.Nested(ArgumentSchema), missing=list)
     options = fields.List(fields.Nested(OptionSchema), missing=list)
     stages = fields.List(fields.Nested(AliasStageSchema), data_key="stage")

src/mario/cli.py

@@ -80,7 +80,7 @@ def run(ctx, **cli_params):
 
     params = alias.arguments + alias.options
     return click.Command(
-        name=alias.name, params=params, callback=click.pass_context(run)
+        name=alias.name, params=params, callback=click.pass_context(run), short_help=alias.short_help, help=alias.help
     )