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/basic/terminal-util.h

@@ -4,8 +4,8 @@
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <syslog.h>
 #include <sys/types.h>
+#include <syslog.h>
 #include <termios.h>
 #include <unistd.h>