* battery: Extract battery level estimation into function
Test battery level estimation with sharp edges based on predefined
steps. Rename variable for clarity and add type hints.
Related #2744
* battery: Interpolate battery level for some rechargeable devices in percent
Estimate remaining battery based on measured battery voltage. Use linear
interpolation to achieve a smooth line instead of 10 percent jumps.
Fixes#2744
* Refactor: test_named_ints_flag_names
Shorten test and clarify behavior using binary numbers.
* Introduce plain flag_names function
This replicates the NamedInts functionality as plain function.
* Refactor FeatureFlag to use IntFlag
Replace NamedInts implementation with IntFlag enum and plain flag_names
function.
Related #2273
* Refactor FirmwareKind to use IntEnum
- Move general FirmwareKind to common module.
- Replace NamedInts implementation with IntEnum.
- Harden related HIDPP 1.0 get_firmware test.
Related #2273
* Refactor CID_GROUP, CID_GROUP_BIT to use IntEnum
Related #2273
MattHag
Peter F. Patel-Schneider