[TIME-3146] Create new xero-payroll-au-v2.yaml spec

[kurtlnz]

Description

This change set implements the following 2.0 endpoints for Timesheets in AU Payroll

1. [GET] /Timesheets
2. [GET] /Timesheets/{TimesheetID}
3. [POST] /Timesheets
4. [POST] /Timesheets/{TimesheetID}/Approve
5. [POST] /Timesheets/{TimesheetID}/RevertToDraft
6. [POST] /Timesheets/{TimesheetID}/Lines
7. [PUT] /Timesheets/{TimesheetID}/Lines/{TimesheetLineID}
8. [DELETE] /Timesheets/{TimesheetID}
9. [DELETE] /Timesheets/{TimesheetID}/Lines/{TimesheetLineID}

This brings AU functionality into line with Timesheets in NZ and UK Payroll.

Release Notes

See above

Screenshots (if appropriate):

Developer documentation:

Types of Changes

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

[github-actions]

PETOSS-859

[github-actions]

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