tree-wide: fix a few missing includes

src/import/import-common.h

@@ -1,6 +1,8 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
+#include <sys/types.h>
+
 int import_make_read_only_fd(int fd);
 int import_make_read_only(const char *path);
 

src/shared/machine-image.h

@@ -4,6 +4,8 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#include "sd-id128.h"
+
 #include "hashmap.h"
 #include "lockfile-util.h"
 #include "macro.h"

src/shared/verbs.h

@@ -1,6 +1,8 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
+#include <stdbool.h>
+
 #define VERB_ANY ((unsigned) -1)
 
 typedef enum VerbFlags {