Create @internationalized scope (#1563)
* Move NumberParser and NumberFormatter into @spectrum-i18n scope
* Move message formatter into @spectrum-i18n/message-formatter
* Move channel name localizations and value formatting to @react-stately/color
Supports different formatting depending on the channel, and adds default aria-label for color slider and color wheel based on channel name
* Polyfill degree unit formatting for Safari
https://bugs.webkit.org/show_bug.cgi?id=218139
* lint
* Rename @spectrum-i18n/message-formatter to just @spectrum-i18n/message
* Rename scope to @internationalized
* Fix lint
