Spike for multiple changes on company info page

In the Company Info Page a user can initiate a change, which will trigger a single filing. E.g. choose to change the directors and a Change of Directors filing is launched.

The mental model of many users is that they need to update their business. This doesn't necessarily align with how filings are broken out. If a user needs to change directors, company address and name at once, ideally they should be able to navigate to this page and make all changes. Those could still ledger the appropriate legal filings, fee line items in the fee summary, and outputs in the filing history, but would be more simply completed in one transaction.

Review is needed to understand the impacts of this change. This review should look at:
- how to process the initial multi filing and whether or not we'd break it up into separate transactions when its actually filed
- could introduce parent/child filings
- or reference the initial filing similar to corrections
- or keep it as one filing transaction (complicates it a bit for future effective things like COA)
- how to process invoice creation (reference a multi filing vs split filings)
- how to handle 'is allowed' and 'validation' (i.e. consider multiple drafts if they are being split)
- ledger / task response handling
- documents list response and reports handling
- schema update (initial thoughts are things can mostly be kept the same with an added multi filing name field that can accept an array)