Rename ModuleToIndex to PalletRuntimeSetup (#7148)

* Rename `ModuleToIndex` to `PalletRuntimeSetup`

Besides the renaming it also adds support getting the name of a pallet
as configured in the runtime.

* Rename it to `PalletInfo`

* Remove accidentally added files

Author: bkchr

src/mock.rs

@@ -139,7 +139,7 @@ impl frame_system::Trait for Test {
 	type MaximumBlockLength = MaximumBlockLength;
 	type AvailableBlockRatio = AvailableBlockRatio;
 	type Version = ();
-	type ModuleToIndex = ();
+	type PalletInfo = ();
 	type AccountData = ();
 	type OnNewAccount = ();
 	type OnKilledAccount = ();