* Ensure relay chain block number strictly increases

This is a safeguard for when async backing is enabled on the relay chain and multiple parachain
blocks per relay chain block are legal. We will need to later change this to support then multiple
parachain blocks per relay chain block.

* Make the check configurable

* Fix compilation

* Update pallets/parachain-system/src/lib.rs

Co-authored-by: André Silva <[email protected]>

* Update pallets/parachain-system/src/lib.rs

Co-authored-by: André Silva <[email protected]>

* Fix test

Co-authored-by: André Silva <[email protected]>

* Fixes

* Bump

* Formatting

* Bump

* Bump

* Fix warnings

* Bump

* Fix build

* Fix the build

* Fixes

* Formatting

Co-authored-by: Bastian Köcher <[email protected]>

* add docs to parachain runtimes

* update and add top readme

* clarify docs

* review plus licenses

* Update parachains/README.md

* Update parachains/runtimes/assets/README.md

Co-authored-by: Bernhard Schuster <[email protected]>

* Update parachains/runtimes/assets/README.md

Co-authored-by: Bernhard Schuster <[email protected]>

Co-authored-by: Bernhard Schuster <[email protected]>

* Runtime version bump to 922

* Switch to 9220

* rerame res to chain-specs

* split polkadot-parachains dir

* rename dir parachains-common to common

Co-authored-by: joe petrowski <[email protected]>
Co-authored-by: Wilfried Kopp <[email protected]>
Co-authored-by: Chevdor <[email protected]>