Enable working day calculation instead of working time calculation

[arolfes]

Our customer wants the old behaviour to calculate the dueDate from before version 6.0.0 back

Example:
actual:
ServiceLevel=3 Tage
PlanedDate=30.07.2023 (Sunday) -> 31.07.2023 (Monday)
DueDate=02.08.2023 (Wednesday)

expected:
ServiceLevel=3 Tage
PlanedDate=30.07.2023 (Sunday) -> 31.07.2023 (Monday)
DueDate=03.08.2023 (Thursday)

affected Version 6.0.2 and following

[arolfes]

To fulfil the needs of other customers we decided to make the behaviour configurable.

You can decide if you want to have precise WorkingTime calculation based on milliseconds or if you want the calculation based on the Day.

[arolfes]

New configuarion property

taskana.workingTime.useWorkingTimeCalculation=true

default value true

When this property is set to true, the Working*Time*CalculatorImpl is used.
When this property is false, the Working*Day*CalculatorImpl is used.

The WorkingDayCalculator is a new class and implements the interface WorkingTimeCalculator

We also implement at least the following 3 testcases:

Beispiel 1:
ServiceLevel=3 Days
PlanedDate=30.07.2023 (Sunday) -> 31.07.2023 (Monday)
DueDate=03.08.2023 (Thursday)

Beispiel 2:
ServiceLevel=2 Tage
PlanedDate=29.03.2024 (Good Friday) -> 02.04.2024 (Tuesday)
DueDate=04.04.2024 (Thursday)

Beispiel 3:
ServiceLevel=13 Tage
PlanedDate=29.03.2024 (Good Friday) -> 02.04.2024 (Tuesday)
DueDate=19.04.2024 (Friday one week later)