fix(rust): add wrapper for running clippy

Add wrapper for running clippy on each file separately, since
‹clippy-driver› accepts only one file at a time.

Signed-off-by: Matej Focko <mfocko@redhat.com>

.pre-commit-hooks.yaml

@@ -21,7 +21,7 @@
 - id: rust-clippy
   name: clippy
   description: Lint Rust sources with ‹clippy›.
-  entry: clippy-driver
+  entry: rust/clippy-driver.sh
   language: system
   types:
     - rust

rust/clippy-driver.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+for src_file in "$@"; do
+  clippy-driver $src_file
+done