* Add "stop" trait to Cover
* Add `supports_stop` to Cover protobuf msg
* Run `script/api_protobuf/api_protobuf.py`
... followed by `script/clang-format -i`
* Add `has_stop` field to template Cover
* Set `has_stop` during Cover codegen
* Set `supports_stop` trait on all other Cover types
* Bump APIVersion to 1.8
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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>