feat: Write Talk URL into location, not description

[ChristophWurst]

Fall back to description if location is filled, e.g. for a hybrid event.

This contributes part 2 of #5389.

How to test

1. Set up Calendar and Talk
2. Create an event
3. Click the Create Talk room button

On main there will be an URL inserted into the description.
On this branch the URL will be written to the location if it's empty or not set. If it is, the URL is appended to the description.

[codecov]

Codecov Report

Patch coverage: 3.57% and project coverage change: -0.02% ⚠️

Comparison is base (847504c) 22.67% compared to head (7f39c7b) 22.66%.
Report is 19 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5395      +/-   ##
============================================
- Coverage     22.67%   22.66%   -0.02%     
  Complexity      372      372              
============================================
  Files           237      237              
  Lines         11719    11725       +6     
  Branches       2278     2282       +4     
============================================
  Hits           2657     2657              
- Misses         9062     9068       +6     

Flag	Coverage Δ
javascript	13.89% <3.57%> (-0.01%)	⬇️
php	65.47% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/components/Editor/Invitees/InviteesList.vue	0.00% <0.00%> (ø)
src/mixins/EditorMixin.js	3.61% <0.00%> (ø)
src/services/talkService.js	0.00% <0.00%> (ø)
src/store/calendarObjectInstance.js	0.00% <0.00%> (ø)
src/views/Calendar.vue	0.00% <ø> (ø)
src/views/EditSidebar.vue	0.00% <0.00%> (ø)
src/store/settings.js	88.59% <100.00%> (ø)

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[kesselb]

Very nice 👍

I would like to suggest adding a bit of explanation before the link in the description.

Example Teams:

(Screenshot is from the imip email but the same text is used for the description ics field)

Example Google:

(Screenshot is also from the imip email but the same text is used for the description ics field)

As backup, the link could always be in the description.
If the location field is empty, write the link inside. But always append to the description.

[kesselb]

Works 👍

Left two remarks about the general concept.

[ChristophWurst]

Generating text is fun and games until you have more than one language involved 😃

[kesselb]

Klicken Sie auf den nachfolgenden Link, um an der Online-Video-Besprechung mit nächster Wolkenverbreitung teilzunehmen ;)