[DmenuScript] Add missing header file.

include/dialogs/dmenuscriptshared.h

@@ -0,0 +1,21 @@
+#ifndef ROFI_DIALOGS_DMENU_SCRIPT_SHARED_H
+#define ROFI_DIALOGS_DMENU_SCRIPT_SHARED_H
+
+typedef struct {
+    /** Entry content. (visible part) */
+    char     *entry;
+    /** Icon name to display. */
+    char     *icon_name;
+    /** Async icon fetch handler. */
+    uint32_t icon_fetch_uid;
+} DmenuScriptEntry;
+/**
+ * @param sw Unused
+ * @param entry The entry to update.
+ * @param buffer The buffer to parse.
+ * @param length The buffer length.
+ *
+ * Updates entry with the parsed values from buffer.
+ */
+void dmenuscript_parse_entry_extras ( G_GNUC_UNUSED Mode *sw, DmenuScriptEntry *entry, char *buffer, size_t length );
+#endif // ROFI_DIALOGS_DMENU_SCRIPT_SHARED_H