Remove Default, HasCompact, and TypeInfo trait bounds on AssetId (#12740)

* Remove Default, HasCompact, and TypeInfo trait bounds on AssetId

* don't use default in benchmarking

* add helper trait

* add helper to assets tx payment test

* docs fixes

* i'm confused

* aha, cargo

* move affected dispatchable calls into new indices

* Helper -> BenchmarkHelper

* benchmark use of helper

* actually, don't break every call interface

* use into on AssetIdParameter

* Remove From from AssetIdParameter and use it in BenchmarkHelper

* include from

Co-authored-by: parity-processbot <>