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

[NeilSureshPatel]

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.

• [ ] This PR completes the ticket.

ALLOW_MANY_COMMITS=true

[CLAassistant]

All committers have signed the CLA.

[NeilSureshPatel]

I think this is great so far and note that it is draft=contributed.

Are you able to add test data? See https://github.com/unicode-org/cldr/tree/main/common/testData/transforms (note the _readme.txt there)

I can pull together some test data as I get time to assemble it.

[srl295]

• please close #4299
• please squash so that the commit message title is correct

[jira-pull-request-webhook[bot]]

Hooray! The files in the branch are the same across the force-push. 😃

~ Your Friendly Jira-GitHub PR Checker Bot

[NeilSureshPatel]

I think I got it squashed properly, but let me know if need to do something else

[srl295]

looks good