Tolerate different formats of Excel

## Description

Allow the user to upload an Excel with more fluid formats. For example, the attached Excel does not work unless I rename the columns and delete the blank rows. Can we do something with the columns?

[wellbeing-scales-list.xlsx](https://github.com/user-attachments/files/28749287/wellbeing-scales-list.xlsx)

## Environment

Should be possible to upload the Excel in the web UI at https://harmonydata.ac.uk/app

## Expected Behaviour

Harmony should correctly identify the column containing the question text and ideally propagate the instrument name and notes column through the entire harmonisation process if possible