Data source for the Analytics App

[Rello]

This pull adds a data source to report on forms with Analyitcs

• real time reporting
• scheduled data loads (for trends)
• charts and/or tables
• multi page dashboards (coming with Analytics 5)
• PDF/print dashboards (coming with Analytics 5)
• one-click dashboard creation for all questions of a form

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Data source selection

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Single report

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Dashboard

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 53 lines in your changes missing coverage. Please review.

Project coverage is 45.17%. Comparing base (a77de95) to head (072ab1a).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2195      +/-   ##
============================================
- Coverage     45.95%   45.17%   -0.79%     
- Complexity      797      811      +14     
============================================
  Files            65       67       +2     
  Lines          3066     3119      +53     
============================================
  Hits           1409     1409              
- Misses         1657     1710      +53     

[susnux]

CI is failing a lot (PHP code style, missing stubs for psalm, missing unit tests), please fix this :)

Also cc @Chartman123, what do you think about this?

[Chartman123]

@susnux if this doesn't come with any problems when the Analytics app isn't installed, I'd be fine with it.

[Rello]

@Chartman123 I just did another test on my side - all clean. no nextcloud.log
happy for an other retest

...we only need to find a way for the psalm and the unit-tests...

[Fenn-CS]

Look okay.