[Feature Request] Support for Trinamic TMC2202 stepper drivers?

[Hedda]

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Add or verify support for Trinamic TMC2202 stepper drivers and state so in README file?

A similar request to that of #90

@teemuatlut if TMC2202 is already supported then maybe list so in the README.md file?

https://github.com/teemuatlut/TMCStepper/blob/master/README.md

Both TMC2202 and TMC2220 belong to same family as TMC2208, TMC2224 & TMC2225