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/cap-list.c

@@ -5,8 +5,8 @@
 
 #include "alloc-util.h"
 #include "bitfield.h"
-#include "capability-util.h"
 #include "cap-list.h"
+#include "capability-util.h"
 #include "extract-word.h"
 #include "log.h"
 #include "macro.h"