Fix (#96) improve datetime parsing on sql server

[followynne]

This PR aims to fix #96, by changing the default datetime parsing in MS SQL Provider.

The default parse will assume that the date saved in the database is related to the application culture, assuming it's local based.

If the user isn't satisfied by the default parsing, a new parameter can be used to customize the datetime parsing. The DateTime produced must be UTC-kind or the app will throw an exception.

EDIT: it also bumps npm libraries (will close the other PRs later)

[followynne]

Hello @mo-esmp,

I tried a fix for #96 + added Teronis package to package the nuget with the referenced dll (I didn't find a way to dotnet pack and include the reference to serilog.ui.core...)

If you like both changes, I'd move onwards and publish an alpha version for mssql provider, to let users test it (and test nuget publication from my side) 😄

[mo-esmp]

Sorry for the late response. Do we need to add some tests regarding the bug? because for me it is still unclear under what circumstances this bug can happen.

[followynne]

@mo-esmp

tests added, let me know if the bug and its fix are more clear 😄

[mo-esmp]

Thanks for adding tests.