Feature Request: Add date interval for "Financial Year"

New to InvoiceNinja, so maybe I have missed something but it seems as though there is no support for a separate Financial Year interval in reports.

I can set the first month of the year to that of the companies financial year but this causes the This Year interval to change away from the expected calendar year which would be confusing to anyone that did not know the This Year interval has been 'customised'.

The company configuration should allow for a Financial Year interval to be set, and this interval should be added alongside the This Year interval as a separate option in the reports interval dropdown.

Eg.
![image](

Has this already had some consideration, or is this something that would be welcome as a PR?