Add voidNote() method to NoteDAO

TODO: Couldn't find a voidNote() method.
deleteNote() should not be called except for testing and administration purposes. Use the void method instead.
File: /api/src/main/java/org/openmrs/api/db/NoteDAO.java
Line: 61

Add this new method to the NoteDAO such that we can use it for voiding notes:

public Note voidNote(Note note, String reason) throws APIException;

This will require adding these fields to the Note class:

private Boolean voided = Boolean.FALSE;
	
private Date dateVoided;
	
private User voidedBy;
	
private String voidReason;

In addition, these fields need to be added to the Note.hbm.xml file