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/shared/install-printf.c

@@ -5,8 +5,8 @@
 #include <unistd.h>
 
 #include "format-util.h"
-#include "install-printf.h"
 #include "install.h"
+#include "install-printf.h"
 #include "macro.h"
 #include "specifier.h"
 #include "string-util.h"