Add hook and trigger to handle hwdb.d files

Adds a hook to check if /usr/lib/udev/hwdb.d is being modified. If so,
triggers 'udevadm hwdb --root=. --update'.

Closes: #9858 [via git-merge-pr]

common/hooks/post-install/04-create-xbps-metadata-scripts.sh

@@ -143,6 +143,12 @@ _EOF
 			echo "export info_files=\"${info_files}\"" >> $tmpf
 		fi
         fi
+	#
+	# Handle files in hwdb directory
+	#
+	if [ -d "${PKGDESTDIR}/usr/lib/udev/hwdb.d" ]; then
+		_add_trigger hwdb.d-dir
+    fi
 	#
 	# (Un)Register a shell in /etc/shells.
 	#