[Bug 53354] Wine should provide icu.dll

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53354

--- Comment #3 from Nikolay Sivov  ---
I think there are two options basically. We either import that in its entirety
under /libs or use addon model same as wine-mono or wine-gecko.

If it was only used from crt modules, we didn't have to use exactly icu.dll,
but I think current versions also provide headers for ICU itself to be used
directly by applications.