[BCRYPT] Add ECDSA P384 to known algorithms
Add missing structs and handler in BCryptOpenAlgorithmProvider().
Cherry-pick a part of Michael Müller's
https://source.winehq.org/git/wine.git/commit/76b6c360fa7f3d6a0a14ed935075f5eb10f2f719
Follow-up to e0a47b7 (0.4.15-dev-3603).
CORE-14198
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