Bold-Fill weight?
Not a bug, not an icon: a weight.

**Describe the bug**
I think there should be a Bold + Fill weight for extra consistency.

**To Reproduce**
1. If you are using Bold vs. Fill to indicate states;
2. If the icon in question has lines in the Fill weight;
3. Then the lines are consistent with the Regular weight, not Bold.

**Expected behavior**
A Bold-Fill weight would be to Bold what Fill is to Regular.
(So maybe you should have Light-Fill and Thin-Fill as well? 😬)

**Screenshots**
This clearly shows the inconsistency I am referring to:
<img width="383" alt="Screen Shot 2022-06-07 at 15 17 13" src="https://user-images.githubusercontent.com/60013915/172455022-caa28b32-e8f6-4c9b-8cb2-badce28f7fff.png">