Create empty test cases for AddNoteCommand and AddNoteCommandParser.

To be updated subsequenetly.

Author: hengyiqun

src/test/java/seedu/address/logic/commands/note/AddNoteCommandTest.java

@@ -0,0 +1,4 @@
+package seedu.address.logic.commands.note;
+
+public class AddNoteCommandTest {
+}

src/test/java/seedu/address/logic/parser/note/AddNoteCommandParserTest.java

@@ -0,0 +1,4 @@
+package seedu.address.logic.parser.note;
+
+public class AddNoteCommandParserTest {
+}