* Impl unknown tokens pallet.

* Fix workspace pallet path.

* Make clippy happy.

* Clippy, be happy.

* Unit tests.

* Handle unknown assets in TransactAsset impl.

* More documentations.

* Clean code.

* Renaming.

* Should try to deposit known asset first.

* Return error if no UnknownAsset impl.

* Make clippy happy.

* Add xtokens module docstring.

* Add xtokens readme.

* Add documentations for xcm-support.

* Add xtokens and xcm-support entries in main readme.

* Replace XcmError::Undefined usage.

* make clippy happy

* Use cumulus xcm-handler to execute XCM locally.

* Add docstring for xtokens config.

* Use MultiLocation as xtokens transfer dest type.

* Make clippy happy.

* Update patches.

* Update dependencies.

* Bump dependencies.

* Dependencies: use rococo-v1 branch.

* xtokens and xcm-support module.

* Fix clippy.

* Xcm execution in xtokens.

* Remove unused imports.

* Remove parent from sibling parachains multi location.

* TTransfer to parachain should be transactional.

* TODO: revert state on xcm execution failure.

* Update sibling parachain location.

* Bump dependencies.

* Update multilocation representation in xtoken.

* fix clippy

* remove sp-io

* fix check

* Bump dependencies.

* Fix benchmarking logs.

* Dependencies.

* Bump xtokens and xcm-support version.

Co-authored-by: zjb0807 <zjb0807@qq.com>

* update gh action

* update

* update

* workaround build issue

* update

* Migrated auction mock file to construct_runtime macro

* Migrated currencies mock file to contruct_runtime

* Migrated gradually-update mock file to construct_runtime

* Migrated nft mock file to construct_runtime macro

* Migrated oracle mock file to construct_runtime

* Migrated rewards mock file to construct_runtime macro

* Migrated mock file to construct_runtime macro

* Migrated mock file to construct_runtime macro

added web3 grant info

* Tidy up oracle module.

* Tokens and currencies module.

* Apply convention to modules.

* Migrate oracle module.

* Migrate NFT module.

* Impl genesis config default under std.