Accounts data

[suganya-s]

Summary

Jupyter notebook consolidate_accounts_columns.ipynb takes an extract of accounts data and neatens it, providing a schema with columns and expected values.

Checklists

General checks

• [✔️ ] Code runs
• Developments are secure and ethical)
• [ ✔️ ] You have made proportionate checks that the code works correctly - this isn't productionised yet, still need to check if it's useful, so don't think it requires tests
• Test suite passes
• Assumptions, and caveats log updated (see docs/aqa/assumptions_caveats.md), if necessary - not sure if any assumptions need adding, maybe something about how I assume tat the questions.yaml file will match the data?
• Minimum usable documentation written in the docs folder - don't think this is necessary yet