Problem with SQLitePCLExtensions.EncryptionSupported and GetNativeLibraryName

`SQLitePCLExtensions.EncryptionSupported` is using SQLitePCLRaw's `GetNativeLibraryName` to decide if the underlying SQLite library supports encryption or not. But the name of the library is not a reliable way to determine that. This is especially true with SQLitePCLRaw 3.x, where I am using the `e_sqlite3` base name for multiple implementations.

I'm not sure there currently is a way to implement `EncryptionSupported` which is compatible with all the various SQLite encryption libraries. Perhaps we could devise and implement one, but removal of `EncryptionSupported` should also be considered.

Start at SQLitePCLExtensions.EncryptionSupported and trace its use of SQLitePCLRaw's GetNativeLibraryName. Review how SQLitePCLRaw 3.x names the e_sqlite3 implementations and determine whether a compatible detection approach is possible or removal is preferable. Done means resolving that design choice and implementing the agreed behavior.

Written by the indexing model from the issue text.