Coretime Feature branch (relay chain) (#1694)

Also fixes: https://github.com/paritytech/polkadot-sdk/issues/1417

- [x] CoreIndex -> AssignmentProvider mapping will be able to change any
time.
- [x] Implement
- [x] Provide Migrations
- [x] Add and fix tests
- [x] Implement bulk assigner logic
- [x] bulk assigner tests
- [x] Port over current assigner to use bulk designer (+ share on-demand
with bulk): top-level assigner has core ranges: legacy, bulk
- [x] Adjust migrations to reflect new assigner structure
- [x] Move migration code to Assignment code directly and make it
recursive (make it possible to skip releases) -> follow up ticket.
- [x] Test migrations
- [x] Add migration PR to runtimes repo -> follow up ticket.
- [x] Wire up with actual UMP messages
- [x] Write PR docs

---------

Co-authored-by: eskimor <eskimor@no-such-url.com>
Co-authored-by: Bradley Olson <34992650+BradleyOlson64@users.noreply.github.com>
Co-authored-by: BradleyOlson64 <lotrftw9@gmail.com>
Co-authored-by: Anton Vilhelm Ásgeirsson <antonva@users.noreply.github.com>
Co-authored-by: antonva <anton.asgeirsson@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Marcin S. <marcin@realemail.net>
Co-authored-by: Bastian Köcher <info@kchr.de>
Co-authored-by: command-bot <>

polkadot/zombienet_tests/smoke/0004-configure-relay.js

@@ -0,0 +1,43 @@
+const assert = require("assert");
+
+async function run(nodeName, networkInfo, _jsArgs) {
+  const { wsUri, userDefinedTypes } = networkInfo.nodesByName[nodeName];
+  const api = await zombie.connect(wsUri, userDefinedTypes);
+
+  await zombie.util.cryptoWaitReady();
+
+  // account to submit tx
+  const keyring = new zombie.Keyring({ type: "sr25519" });
+  const alice = keyring.addFromUri("//Alice");
+
+  const calls = [
+    api.tx.configuration.setCoretimeCores({ new: 1 }),
+    api.tx.coretime.assignCore(0, 20,[[ { task: 1005 }, 57600 ]], null)
+  ];
+  const sudo_batch = api.tx.sudo.sudo(api.tx.utility.batch(calls));
+
+  await new Promise(async (resolve, reject) => {
+    const unsub = await sudo_batch.signAndSend(alice, (result) => {
+      console.log(`Current status is ${result.status}`);
+      if (result.status.isInBlock) {
+        console.log(
+          `Transaction included at blockHash ${result.status.asInBlock}`
+        );
+      } else if (result.status.isFinalized) {
+        console.log(
+          `Transaction finalized at blockHash ${result.status.asFinalized}`
+        );
+        unsub();
+        return resolve();
+      } else if (result.isError) {
+        console.log(`Transaction Error`);
+        unsub();
+        return reject();
+      }
+    });
+  });
+
+  return 0;
+}
+
+module.exports = { run };