gnosis / dex-services / 5044 / 3

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travis-pro

More async_trait conversions (#1389)

This is most remaining traits at the same time since it's just applying the mostly mechanical transformation.
Again keep in mind that diff without whitespace more than halves the diff.

### Test Plan
No logic change. CI.

12888 of 52762 branches covered (24.43%)

Branch coverage included in aggregate %.

3376 of 5284 relevant lines covered (63.89%)

63133.08 hits per line