Reformat imports to a consistent style for imports

rustfmt.toml configuration:
  imports_granularity = "One"
  group_imports = "One"

sdk/src/native_loader.rs

@@ -1,7 +1,9 @@
-use crate::account::{
-    Account, AccountSharedData, InheritableAccountFields, DUMMY_INHERITABLE_ACCOUNT_FIELDS,
+use crate::{
+    account::{
+        Account, AccountSharedData, InheritableAccountFields, DUMMY_INHERITABLE_ACCOUNT_FIELDS,
+    },
+    clock::INITIAL_RENT_EPOCH,
 };
-use crate::clock::INITIAL_RENT_EPOCH;
 
 crate::declare_id!("NativeLoader1111111111111111111111111111111");