- This commit enforce that only one instance of Ring can run.
Ring window now show if it was minimized or hidden when attempting
to launch again.

- Ring will be launched or shown on ring: protocol use and
call the provided uri.
(e.g.
<a href="ring:93fcda525734afd73f5cac945af0653906f6a692">
	test ring link
</a>)

- Register ring protocol in Windows registry at install time
as we need administrator elevation.

Issue: #78588
Issue: #78589
Change-Id: I7645d8a3154ce1c91a91bfac21c330add9a03fcc