Add Treasury pallet to Trappist. (#160)

* Work

* Fixing issue of compilation

* Pushing a possible fix

* Reverting xcm-playground.toml

* Fixing chain id for HRMP channels

* Fixing some values

* Fixing xcm-playground

* Fixing README

* Fixing service

* Removing unnecesary ()

* Pallet added

* coming back to two different collators

* Fixing test

* Cleaning unnecesary setups

* Restoring XCM playground

* Adding chain values back

* Remove unnecesary types

* Adding ToAuthor to XCM trader

* Addressing PR feedback about impl simplification

* Removing unnused imports

* Adjusting democracy pallet instances

* Adjusting democracy pallet instances

* Fix build

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Co-authored-by: Steve Degosserie <[email protected]>