Add Malayalam translation

[RoshanRathod0137-code]

This PR adds Malayalam localization support for WinGUp.

• Adds the Malayalam translation file.
• Keeps the existing WinGUp localization structure and placeholders.

[donho]

There is a problem of encoding:

<?xml version="1.0" encoding="UTF-8" ?>
<GUP_NativeLanguage name="Malayalam">
	<PopupMessages>
		<!-- <MSGID_NOUPDATE>No update is available.</MSGID_NOUPDATE> -->
		<MSGID_NOUPDATE>????? ????????? ????????.</MSGID_NOUPDATE>
				
		<!-- <MSGID_UPDATEAVAILABLE>An update package is available, do you want to download it?</MSGID_UPDATEAVAILABLE> -->
		<MSGID_UPDATEAVAILABLE>??? ????????? ????????. ??? ??????? ?????? ????????? ????????</MSGID_UPDATEAVAILABLE>

		<!-- <MSGID_DOWNLOADSTOPPED>Download is stopped by user. Update is aborded.</MSGID_DOWNLOADSTOPPED> -->
		<MSGID_DOWNLOADSTOPPED>??????? ?????????? ???????????????????. ????????? ?????????.</MSGID_DOWNLOADSTOPPED>
		
		<!-- <MSGID_CLOSEAPP> is opened.\rUpdater will close it in order to process the installation.\rContinue?</MSGID_CLOSEAPP> -->
		<MSGID_CLOSEAPP>????????? ????????? ??????????????? ??????????? ?????????. ????????</MSGID_CLOSEAPP>

		<!-- <MSGID_ABORTORNOT>Do you want to abort update download?</MSGID_ABORTORNOT> -->
		<MSGID_ABORTNOT>????????? ??????? ??????????? ???????????</MSGID_ABORTNOT>
	</PopupMessages>
</GUP_NativeLangue>