Rococo & Westend People Chain (#2281)

Rococo and Westend runtimes for the "People Chain". This chain contains
the Identity pallet with plans to migrate all related data from the
Relay Chain.

Changes `IdentityInfo` to:

- Remove `additional_fields`.
- Add `github` and `discord` as first class fields. From scraping chain
data, these were the only two additional fields used (for the Fellowship
and Ambassador Program, respectively).
- Rename `riot` to `matrix`.

Note: This will use the script in
#2025 to generate the
genesis state.

TODO:

- [x] #1814 and
integration of the Identity Migrator pallet for migration.
- [x] Tests: #2373

---------

Co-authored-by: Muharem <ismailov.m.h@gmail.com>
Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>
Co-authored-by: Dónal Murray <donal.murray@parity.io>
Co-authored-by: Richard Melkonian <35300528+0xmovses@users.noreply.github.com>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>

Cargo.toml

@@ -81,6 +81,8 @@ members = [
 	"cumulus/parachains/integration-tests/emulated/chains/parachains/bridges/bridge-hub-rococo",
 	"cumulus/parachains/integration-tests/emulated/chains/parachains/bridges/bridge-hub-westend",
 	"cumulus/parachains/integration-tests/emulated/chains/parachains/collectives/collectives-westend",
+	"cumulus/parachains/integration-tests/emulated/chains/parachains/people/people-rococo",
+	"cumulus/parachains/integration-tests/emulated/chains/parachains/people/people-westend",
 	"cumulus/parachains/integration-tests/emulated/chains/parachains/testing/penpal",
 	"cumulus/parachains/integration-tests/emulated/chains/relays/rococo",
 	"cumulus/parachains/integration-tests/emulated/chains/relays/westend",
@@ -92,6 +94,8 @@ members = [
 	"cumulus/parachains/integration-tests/emulated/tests/assets/asset-hub-westend",
 	"cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-rococo",
 	"cumulus/parachains/integration-tests/emulated/tests/bridges/bridge-hub-westend",
+	"cumulus/parachains/integration-tests/emulated/tests/people/people-rococo",
+	"cumulus/parachains/integration-tests/emulated/tests/people/people-westend",
 	"cumulus/parachains/pallets/collective-content",
 	"cumulus/parachains/pallets/parachain-info",
 	"cumulus/parachains/pallets/ping",
@@ -107,6 +111,8 @@ members = [
 	"cumulus/parachains/runtimes/coretime/coretime-rococo",
 	"cumulus/parachains/runtimes/coretime/coretime-westend",
 	"cumulus/parachains/runtimes/glutton/glutton-westend",
+	"cumulus/parachains/runtimes/people/people-rococo",
+	"cumulus/parachains/runtimes/people/people-westend",
 	"cumulus/parachains/runtimes/starters/seedling",
 	"cumulus/parachains/runtimes/starters/shell",
 	"cumulus/parachains/runtimes/test-utils",

cumulus/parachains/common/Cargo.toml

@@ -34,12 +34,14 @@ sp-runtime = { path = "../../../substrate/primitives/runtime", default-features
 sp-std = { path = "../../../substrate/primitives/std", default-features = false }
 
 # Polkadot
+pallet-xcm = { path = "../../../polkadot/xcm/pallet-xcm", default-features = false }
 rococo-runtime-constants = { path = "../../../polkadot/runtime/rococo/constants", default-features = false }
 westend-runtime-constants = { path = "../../../polkadot/runtime/westend/constants", default-features = false }
 polkadot-core-primitives = { path = "../../../polkadot/core-primitives", default-features = false }
 polkadot-primitives = { path = "../../../polkadot/primitives", default-features = false }
 xcm = { package = "staging-xcm", path = "../../../polkadot/xcm", default-features = false }
 xcm-builder = { package = "staging-xcm-builder", path = "../../../polkadot/xcm/xcm-builder", default-features = false }
+xcm-executor = { package = "staging-xcm-executor", path = "../../../polkadot/xcm/xcm-executor", default-features = false }
 
 # Cumulus
 pallet-collator-selection = { path = "../../pallets/collator-selection", default-features = false }
@@ -70,6 +72,7 @@ std = [
 	"pallet-balances/std",
 	"pallet-collator-selection/std",
 	"pallet-message-queue/std",
+	"pallet-xcm/std",
 	"parachain-info/std",
 	"polkadot-core-primitives/std",
 	"polkadot-primitives/std",
@@ -82,6 +85,7 @@ std = [
 	"sp-std/std",
 	"westend-runtime-constants/std",
 	"xcm-builder/std",
+	"xcm-executor/std",
 	"xcm/std",
 ]
 
@@ -95,7 +99,9 @@ runtime-benchmarks = [
 	"pallet-balances/runtime-benchmarks",
 	"pallet-collator-selection/runtime-benchmarks",
 	"pallet-message-queue/runtime-benchmarks",
+	"pallet-xcm/runtime-benchmarks",
 	"polkadot-primitives/runtime-benchmarks",
 	"sp-runtime/runtime-benchmarks",
 	"xcm-builder/runtime-benchmarks",
+	"xcm-executor/runtime-benchmarks",
 ]