register custom file extension for macos build

diylc/diylc-swing/build.xml

@@ -100,14 +100,25 @@
 		<bundleapp
 	        outputdirectory="${build.dir}"
 	        name="DIYLC"
-			jvmrequired="1.8"
-			copyright="2020 bancika"
+					jvmrequired="1.8"
+					copyright="2020 bancika"
 	        displayname="DIY Layout Creator"
 	        identifier="org.diylc.Desktop"
 	        shortversion="${diylc.version}"
 	        applicationCategory="public.app-category.graphics-design"
-			icon="icons/diylc.icns"
+					icon="icons/diylc.icns"
 	        mainclassname="${main.class}">
+					<bundledocument contentTypes="org.diylc.diy"
+						name="DIYLC document"
+						role="Editor"
+						handlerRank="Owner">
+					</bundledocument>
+					<typedeclaration
+						identifier="org.diylc.diy"
+						description="DIYLC file type"
+						icon="icons/diylc.icns"
+						conformsTo="public.xml,public.text"
+						extensions="diy" />
 			<!--<runtime dir="${env.JAVA_HOME}" />-->
 			<classpath file="${jar.dir}\diylc.jar" />
 			<classpath file="${jar.dir}\lib\*.jar" />