Further fixes/changes to loading 'types' for config + manifest edits

src/auto_archiver/modules/mute_formatter/__manifest__.py

@@ -1,7 +1,7 @@
-m = {
+{
     "name": "Mute Formatter",
     "type": ["formatter"],
-    "requires_setup": False,
+    "requires_setup": True,
     "external_dependencies": {
     },
     "description": """ Default formatter.

src/auto_archiver/modules/mute_formatter/mute_formatter.py

@@ -1,16 +1,12 @@
 from __future__ import annotations
 from dataclasses import dataclass
 
-from ..core import Metadata, Media
-from . import Formatter
+from auto_archiver.core import Metadata, Media
+from auto_archiver.base_processors import Formatter
 
 
 @dataclass
 class MuteFormatter(Formatter):
     name = "mute_formatter"
 
-    def __init__(self, config: dict) -> None:
-        # without this STEP.__init__ is not called
-        super().__init__(config)
-
     def format(self, item: Metadata) -> Media: return None