Separate ParachainId injection to its own pallet (#183)

* Separate paraid injection to own pallet

* Move token dealer to a crate

* Move to rococo-parachains

* Remove parameter_types hack

* Fix chainspec

* fix build

* remove commented code

* Update contracts runtime to match other runtime

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Alphebetize workspace members

* Parachain info to own crate

* prune system = frame_system

Co-authored-by: Ricardo Rius <ricardo@parity.io>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

cumulus/rococo-parachains/pallets/parachain-info/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+name = "parachain-info"
+version = "0.1.0"
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+serde = { version = "1.0.101", optional = true, features = ["derive"] }
+
+frame-support = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
+frame-system = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
+
+cumulus-primitives = { path = "../../../primitives", default-features = false }
+
+[features]
+default = ["std"]
+std = [
+    "codec/std",
+    "serde",
+    "cumulus-primitives/std",
+    "frame-support/std",
+    "frame-system/std",
+]