Fix usage of __all__

devine/core/manifests/__init__.py

@@ -1,4 +1,4 @@
 from .dash import DASH
 from .hls import HLS
 
-__ALL__ = (DASH, HLS)
+__all__ = ("DASH", "HLS")

devine/core/manifests/dash.py

@@ -783,4 +783,4 @@ class DASH:
         return url
 
 
-__ALL__ = (DASH,)
+__all__ = ("DASH",)

devine/core/manifests/hls.py

@@ -549,4 +549,4 @@ class HLS:
         return f"{offset}-{offset + length - 1}"
 
 
-__ALL__ = (HLS,)
+__all__ = ("HLS",)