Rename: primitives/sr-io -> primitives/sp-io (#4328)

* primitives/sr-io -> primitives/io

* fix

* rename

* runtime-io -> sp-io

* git mv

* fix ci

* remove package name

* fix

* fix

* try minimizing diff

* try minimizing diff again

* try minimizing diff again

substrate/primitives/runtime-interface/src/lib.rs

@@ -134,7 +134,7 @@ mod tests {
 			_,
 			(
 				HF,
-				runtime_io::SubstrateHostFunctions,
+				sp_io::SubstrateHostFunctions,
 				executor::deprecated_host_interface::SubstrateExternals
 			)
 		>(