Rigify: annotate and fix warnings in basic rig components.HEADmaster

Introduce a method to annotate types and names of entries in the
`bones` container of rig components and apply it, and other type
annotations, to a number of not very complex rig classes.

- Introduce BaseRigMixin as a typed base class for mixins intended
  for use in rig classes (using BaseRig as a parent causes issues).
- Introduce TypedBoneDict that does not suppress the unknown attribute
  analysis in PyCharm, and use it in a system of subclasses to
  annotate the bones in various rigs. BaseBoneDict is necessary
  because the annotation affects all subclasses, so TypedBoneDict
  cannot inherit from BoneDict with the annotation.
- Add or adjust other type annotations of rig methods and utilities.
- Fix other warnings, e.g. undeclared attributes, excessively long
  lines, whitespace style issues and typos.

1 files changed, 10 insertions, 4 deletions

diff --git a/rigify/rigs/basic/copy_chain.py b/rigify/rigs/basic/copy_chain.py
index cf77a834..3dbf79d4 100644
--- a/rigify/rigs/basic/copy_chain.py
+++ b/rigify/rigs/basic/copy_chain.py
@@ -11,6 +11,10 @@ class Rig(SimpleChainRig):
         and constrain it.
         This is a control and deformation rig.
     """
+
+    make_controls: bool
+    make_deforms: bool
+
     def initialize(self):
         super().initialize()
 
@@ -72,15 +76,17 @@ class Rig(SimpleChainRig):
     # Parameter UI
 
     @classmethod
-    def add_parameters(self, params):
+    def add_parameters(cls, params):
         """ Add the parameters of this rig type to the
             RigifyParameters PropertyGroup
         """
-        params.make_controls = bpy.props.BoolProperty(name="Controls", default=True, description="Create control bones for the copy")
-        params.make_deforms = bpy.props.BoolProperty(name="Deform", default=True, description="Create deform bones for the copy")
+        params.make_controls = bpy.props.BoolProperty(
+            name="Controls", default=True, description="Create control bones for the copy")
+        params.make_deforms = bpy.props.BoolProperty(
+            name="Deform", default=True, description="Create deform bones for the copy")
 
     @classmethod
-    def parameters_ui(self, layout, params):
+    def parameters_ui(cls, layout, params):
         """ Create the ui for the rig parameters.
         """
         r = layout.row()