Fiscal year support

**Describe the bug**
Is there an option to configure when a year starts so that `quarter()` gives the correct result.
the `quarter()` API is added with plugins, so are there any plugins to support fiscal year

**Expected behavior**
support for fiscal year.
moment has `fQuarter` https://momentjs.com/docs/#/plugins/fquarter/

Start by reviewing how the quarter() API is provided through plugins and compare the requested behavior with Moment's fQuarter plugin linked in the issue. Done means users can configure when the fiscal year starts and quarter() returns the corresponding fiscal quarter, with the behavior covered by tests.

Written by the indexing model from the issue text.