.Net: [MEVD] Do a pass over low-level SDKs to check trimming/NativeAOT compat

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We're doing work to make MEVD itself compatible with trimming/NativeAOT, but we ultimately rely on the lower-level SDKs for compatibility. For example, while Npgsql should be 100% compatible, SqlClient is not (at least in principle - some scenarios may work but warnings are very likely to be reported).

We should map out which SDKs are compatible and which aren't, at the very least so we can document (and if needed, communicate on it).