* Introduce `CollectCollationInfo` runtime api

Instead of using well known keys to communicate information about a
collation between the runtime and the collator, we now use a runtime api
for this.

* Fixes bug

* Apply suggestions from code review

Co-authored-by: Sergei Shulepov <[email protected]>

* Doc update

Co-authored-by: Sergei Shulepov <[email protected]>

Before when loading a chain spec from a file it was always using the
rococo parachains runtime genesis config. This leaded to problems when
trying to convert a shell chain spec json file to a raw chain spec.

* Companion for #3010 (Reserve Xfer extrinsic)

* cargo update -p xcm

Co-authored-by: Shawn Tabrizi <[email protected]>

* Companion for #3007: Track teleported assets

* Bump

* Try fix the breakage

Co-authored-by: Sergei Shulepov <[email protected]>

* Rename `rococo-collator` to `polkadot-collator`

Also contains some other small changes.

* Test fixes and some further search&replace