Produce warning on probably wrong metadata feature orientation

[henninggaertner]

Issue description

When importing metadata and choosing the wrong feature orientation, the user does not get a warning. This could lead to unexpected behavior further down the analysis pipeline. A warning should be implemented, when for example the number of columns is much larger than the number of rows of the resulting metadata dataframe. This can be checked in the method for the metadata import

Acceptance Criteria

• [ ] On wrong feature orientation, the user gets a message
• [ ] the message urges the user to look at the "View table" screen and check the correctness of the feature orientation

[henninggaertner]

Implement on branch dev