Deprecate `Regex.init(quoting:)`
Deprecate `Regex.init(quoting:)`

This was renamed to `init(verbatim:)`, but we
never removed the old overload. Deprecate it, and
suggest using `init(verbatim:)` instead.

rdar://98737122

apple/swift-experimental-string-processing,apple/swift-experimental-string-processing,apple/swift-experimental-string-processing