Resolve "Changing the date of a slotted lab does not move the slots"

What does this mr do?

If a slotted lab is edited, it's slots won't update since they are represented by a Slot which has a fixed start and end. This needs to be switched to an offset based on the start of the lab. `

Actions taken to fix bug

Added a new offsetSequence number to denote the position of a slot within a slotted lab. The reason we did not get rid of the slot from the timeslot completely, was that it did not work with QueryDSL.

Screenshots

Before Change:

After Change:

Note that this MR does not support a change in the length of the lab whilst the offset changes. This will be addressed in another MR.

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.

src/main/java/nl/tudelft/queue/dto/patch/labs/AbstractSlottedLabPatchDTO.java

@@ -20,6 +20,7 @@ package nl.tudelft.queue.dto.patch.labs;
 import javax.validation.constraints.NotNull;
 
 import lombok.*;
+import lombok.experimental.SuperBuilder;
 import nl.tudelft.queue.dto.patch.LabPatchDTO;
 import nl.tudelft.queue.dto.patch.SlottedLabConfigPatchDTO;
 import nl.tudelft.queue.model.labs.AbstractSlottedLab;
@@ -28,8 +29,10 @@ import nl.tudelft.queue.model.labs.AbstractSlottedLab;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = true)
+@SuperBuilder
 public abstract class AbstractSlottedLabPatchDTO<D extends AbstractSlottedLab<?>> extends LabPatchDTO<D> {
 	@NotNull
+	@Builder.Default
 	private SlottedLabConfigPatchDTO slottedLabConfig = new SlottedLabConfigPatchDTO();
 
 	private Boolean canSelectDueSlots;
@@ -45,4 +48,5 @@ public abstract class AbstractSlottedLabPatchDTO<D extends AbstractSlottedLab<?>
 		updateNonNull(canSelectDueSlots, data::setCanSelectDueSlots);
 		updateNonNull(earlyOpenTime, data::setEarlyOpenTime);
 	}
+
 }