Add data provider extension points OnAfterXXXError

[walteralmeida]

No description provided.

[walteralmeida]

At the moment there is a Exception parameter to the data provider extension event description, for example : OnAfterSaveDataSetEventArgs.Exception

So the same extension point was call in all scenarios => success or failure of the crud operation. This is confusion, add specific extension points.

For the moment I have deactivated calling the extensions in case of errors. See META-254 in frawework code

[walteralmeida]

I have reactivated calling the extensions in case of errors !!
Because the onafter needs to be called after exception to call DisposeAccessAdapter if EnsureAccessAdapter was called OnBefore ...

Reminder : by default onbefore and onafter are not withing the CRUD transaction, unless added (and removed) explicitely.
But that's cumbersome. Better to find a better way that's no so much error prone.