fixed pyservectl linter errors and formatting

pyserve/ctl/commands/init.py

@@ -364,12 +364,12 @@ def get_template_content(template: str) -> str:
 )
 @click.pass_context
 def init_cmd(
-    ctx,
+    ctx: click.Context,
     template: str,
     output_file: str,
     force: bool,
     list_templates: bool,
-):
+) -> None:
     """
     Initialize a new pyserve project.