refactor: Shift Assignment Schedule

[krantheman]

Changes

Shift Assignment Schedule -> Shift Schedule + Shift Schedule Assignment

Details

Shift Assignment Schedule (Ref (Shift Creation -> Shift Assignment Schedule)) has been broken into two new doctypes to enable reusability of schedule definitions:-

Shift Schedule

• Has Shift Type, Frequency, and Repeat On Days fields
• Is submitable (mostly to ensure consistency when these fields are fetched in the roster, but also to prevent general unexpected behaviour)
• Can be named/renamed
• Duplicate days are eliminated before validation

Docs: https://docs.frappe.io/hr/shift-schedule

Shift Schedule Assignment

• This retains all the rest of the fields from the Shift Assignment Schedule doctype and functions in the same way, except that it fetches the Shift Type, Frequency, and Repeat On Days fields from the selected Shift Schedule
• Shift Assignments are created via and linked to this doctype

Docs: https://docs.frappe.io/hr/shift-schedule-assignment

The Shift Assignment Schedule doctype has been deprecated and removed. A patch has been included that migrates all existing Shift Assignment Schedules into Shift Schedules and Shift Schedule Assignments. The Shift Schedules thus created will be randomly named, but can be renamed thereafter.

Roster

Details

• Cleaned up and remove gray background (conforming to desk view)
• Added Shift Location to shift cell, shift dialog, and in filters
• Added View button to navigate to shift related doctypes
• Added breadcrumbs to navigate to HR app
• Fetch Shift Schedule based on input fields or create new one automatically

Shift Assignment Tool

Details

• Added Assign Shift Schedule Action
  • Employees having active (enabled = 1) overlapping Shift Schedule Assignments are filtered out while rendering datatable
  • Added tests
• Added Shift Location field

Docs: https://docs.frappe.io/hr/shift-assignment-tool#22-assigning-shift-schedules

Shift Tools

Details

• Added Shift Tools dropdown with Shift Assignment Tool and Roster to all shift related doctype lists and some forms
• Opening Shift Assignment Tool from this dropdown will open the related action. For e.g. Shift Schedule will open 'Assign Shift Schedule' with the Shift Schedule set as the one from where it was opened

PS. I apologise for the bloated nature of this PR. Looking back, a lot of this could've been broken down into smaller PRs. 😅

PPS. Shift Schedule should probably be validated more, for overlap and other things. Might pick this up in the future some time.