tree-wide: Sort includes

This was done by running a locally built clang-format with
https://github.com/llvm/llvm-project/pull/137617 and
https://github.com/llvm/llvm-project/pull/137840 applied on all .c
and .h files.

src/test/test-libcrypt-util.c

@@ -6,9 +6,9 @@
 #  include <unistd.h>
 #endif
 
+#include "libcrypt-util.h"
 #include "strv.h"
 #include "tests.h"
-#include "libcrypt-util.h"
 
 static void test_crypt_preferred_method(void) {
         log_info("/* %s */", __func__);