TRestDataSetOdds fix and some more

[AlvaroEzq]

This PR is meant to solve a problem when computing log odds for columns of the dataset with int values. This problem happens because the lambda function GetLogOdds requires the double val parameter, which causes the TTreeReader to read the corresponding column as it was a double, thus causing error when the branch is not double type. To solve this in a simple way, the RDataFrame columns (of the selected observables to compute the log odds) that are not double types are Redefine with a static_cast to double. This solves the issue with simple types such as int (which is a common case).

Also some minor additions (see list below).

The changes are:

• Redefine the columns involved in log odds computation to be casted to double.
• Some debug messages are added within the ComputeLogOdds method. Also change a previous std::cout to RESTInfo.
• Add getters and setters