CLDR-17885 Add Sunu-Deva and Deva-Sunu transforms

CLDR-17885
Initial commit of Sunuwar to Devanagari and Devanagari to Sunuwar transforms using the InterIndic intermediate step. Transforms are based on the SWS standard. Included initial deva-t-sunu TestData

Create deva-t-sunu.txt

Initial test data set for quick validation of transforms

common/testData/transforms/deva-t-sunu.txt

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+प्	𑯉
+अ	𑯈
+ब्	𑯎
+च्	𑯌
+द्	𑯀
+ए	𑯂
+फ्	𑯙
+ग्	𑯊
+ह्	𑯋
+इ	𑯃
+ज्	𑯏
+क्	𑯆
+म्	𑯇
+ल्	𑯐
+व्	𑯓
+न्	𑯍
+ओ	𑯑
+र्	𑯄
+स्	𑯒
+त्	𑯁
+उ	𑯅
+अ्	𑯠
+य्	𑯔
+आ	𑯖
+ब्व्	𑯕
+छ्	𑯝
+ड्	𑯗
+ख्	𑯛
+𑯚	𑯚
+थ्	𑯘
+ट्	𑯞
+श्	𑯜
+ठ्	𑯟
+ॐ	𑯡
+̃	̃
+̍	̍
+́	́
+̀	̀
+०	𑯰
+१	𑯱
+२	𑯲
+३	𑯳
+४	𑯴
+५	𑯵
+६	𑯶
+७	𑯷
+८	𑯸
+९	𑯹
+बाअ्चा	𑯎𑯖𑯠𑯌𑯖
+दुनियालाई	𑯀𑯅𑯍𑯃𑯔𑯖𑯐𑯖𑯃:
+के	𑯆𑯂
+भन्ने	𑯎𑯋𑯈𑯍𑯍𑯂 
+कसो	𑯆𑯈𑯒𑯑
+गर्ने	𑯊𑯈𑯄𑯍𑯂
+जस्तो	𑯏𑯈𑯒𑯁𑯑
+बारिजेम्ला स्वागत	𑯎𑯖𑯄𑯃𑯏𑯂𑯇𑯐𑯖 𑯒𑯓𑯖𑯊𑯈𑯁
+ब्लिाःचा	𑯎𑯐𑯃𑯖:𑯌𑯖
+ब्लोइँचा	𑯎𑯐𑯑𑯃̃𑯌𑯖

common/transforms/Devanagari-Sunuwar_SWS.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE supplementalData SYSTEM "../../common/dtd/ldmlSupplemental.dtd">
+<!--
+Copyright © 1991-2013 Unicode, Inc.
+CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/)
+For terms of use, see http://www.unicode.org/copyright.html
+-->
+<supplementalData>
+	<version number="$Revision$"/>
+	<transforms>
+		<transform source="Deva" target="Sunu" variant="SWS" direction="forward" draft="contributed" alias="deva-t-sunu-sws">
+					<tRule><![CDATA[
+::[ँ-ःऄअ-ह़-्ॐ-॔क़-९ॽ];
+::NFD;
+::Devanagari-InterIndic;
+::InterIndic-Sunuwar_SWS;
+::NFC;
+			]]></tRule>
+		</transform>
+	</transforms>
+</supplementalData>