Use same fmt and clippy configs as in Polkadot (#3004)

* Copy rustfmt.toml from Polkadot master

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Format with new config

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Add Polkadot clippy config

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update Cargo.lock

Looks like https://github.com/paritytech/polkadot/pull/7611 did not
correctly update the lockfile. Maybe a different Rust Version?!

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

cumulus/parachains/runtimes/contracts/contracts-rococo/src/xcm_config.rs

@@ -129,7 +129,8 @@ pub type Barrier = TrailingSetTopicAsId<
 			// Allow XCMs with some computed origins to pass through.
 			WithComputedOrigin<
 				(
-					// If the message is one that immediately attemps to pay for execution, then allow it.
+					// If the message is one that immediately attemps to pay for execution, then
+					// allow it.
 					AllowTopLevelPaidExecutionFrom<Everything>,
 					// Parent and its pluralities (i.e. governance bodies) get free execution.
 					AllowExplicitUnpaidExecutionFrom<ParentOrParentsPlurality>,
@@ -196,7 +197,8 @@ impl pallet_xcm::Config for Runtime {
 	type XcmRouter = XcmRouter;
 	// We support local origins dispatching XCM executions in principle...
 	type ExecuteXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;
-	// ... but disallow generic XCM execution. As a result only teleports and reserve transfers are allowed.
+	// ... but disallow generic XCM execution. As a result only teleports and reserve transfers are
+	// allowed.
 	type XcmExecuteFilter = Nothing;
 	type XcmExecutor = XcmExecutor<XcmConfig>;
 	type XcmTeleportFilter = Everything;