Update names matching changes in c468aeefb5b17b43f12e0bb69b60641721033e8a.

A combination of fixing naming, and adding words to local dictionary.
Also, BlIdLowercase should be disabled in the editor.

- Introduce IdPropSequence, declaring the interface of python
  collection properties.
- Introduce additional accessors to injected bpy.types properties.
- Rename a few fields and functions.
- Prefer the more standard 'noqa' tag comment.

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.

CloudRig has a feature that allows the user to automatically generate
Action constraints that move bones of the rig based on the position
of other bones. This is done by adding and configuring the actions
in a UI panel of the metarig. The feature also supports corrective
actions that activate based on the state of two other actions.

This ports the feature to base Rigify with the necessary changes in
code organization and style, and replacing CloudRig-specific code.

There are also some functional changes:

- The order of action constraints is reversed.
- The way symmetry of LOCATION_X is handed is changed to
  match how Paste Pose Flipped works.
- The action slot UI is shown even without a generated rig.
- More alerts in the UI, e.g. for duplicate rows.

Differential Revision: https://developer.blender.org/D16336