Speaking time edit and overtime

[reiterl]

First draft version of the edit and overhang times parts of the speaking times component.

@bastianjoel Pls have a look at it.

[bastianjoel]

Apart from the remaining todos this LGTM. You could also cleanup the comments with the descriptions of the functionality.

[Elblinator]

Overhang time can be activated if a contribution is only paused, should only be possible if the contribution is stopped

After overhang time was distributed once the following Error is thrown in the console

speaking-times.component.ts:62 ERROR TypeError: Cannot read properties of null (reading 'getTitle')

the displayed speaking times in the LoS and in the Speaking times Card are different.
the displayed time in speaking times is correct, please adjust the speaking times in the LoS

[reiterl]

The addition of the overhang time is only enabled, if all speakers of a speakingTime are not "active" and not "paused".

I couldn't reproduce the type error. @Elblinator said, with clean data, the error no longer occurs.

The third cr is still open.

[reiterl]

Update the los content display. Now speaking times and los display the same times, even if additional time is there.

[Elblinator]

The overhang time should only be added onto the structure levels which are represented in the LoS

If you have structure levels A, B and C and only participants from A and B are on the LoS (so far) overhang time should only be added onto Level A and B

[jsangmeister]

The overhang time should only be added onto the structure levels which are represented in the LoS

If you have structure levels A, B and C and only participants from A and B are on the LoS (so far) overhang time should only be added onto Level A and B

Must be fixed in the backend -> OpenSlides/openslides-backend#2140

[Elblinator]

if the fix needs to be in the backend, then I approve this PR
It can also be mergeed after to code review is through imo