Add meeting stats and attendance reports

[SamuelWei]

Fixes #133

Type (Highlight the corresponding type)

• Bugfix
• Feature
• Documentation
• Refactoring (e.g. Style updates, Test implementation, etc.)
• Other (please describe):

Checklist

• Code updated to current masters head
• Passes CI checks
• Is a part of an issue
• Tests added for the bugfix or newly implemented feature, describe below why if not
• Changelog is updated
• Documentation of code and features exists

Changes

• Added more efficent way to log attendance
• Added room setting to enable attendance logging
• Added UI to room view to see all (current and previous) meetings of a room, the usage statistics and attendance
• Fixed start time in the list of currently running meetings not adjusted to the user's time zone setting
• Added application settings to enable/disable server and meeting usage statistics and set retention periods
• Added application setting to allow attendance logging and set retention period
• Added note and agreement checkbox for users/guests to join/start a meeting with logged attendance

Other information

[codecov]

Codecov Report

Merging #134 (7c667cc) into master (28156c3) will increase coverage by 0.96%.
The diff coverage is 95.72%.

@@             Coverage Diff              @@
##             master     #134      +/-   ##
============================================
+ Coverage     91.77%   92.74%   +0.96%     
- Complexity      584      644      +60     
============================================
  Files           154      165      +11     
  Lines          3235     3472     +237     
  Branches        184      192       +8     
============================================
+ Hits           2969     3220     +251     
+ Misses          204      184      -20     
- Partials         62       68       +6     

Impacted Files	Coverage Δ
app/Console/Kernel.php	37.50% <0.00%> (-12.50%)	⬇️
app/MeetingStat.php	0.00% <ø> (ø)
app/Room.php	98.46% <ø> (ø)
resources/js/charts/LineChart.js	0.00% <0.00%> (ø)
resources/js/components/Room/FileComponent.vue	87.83% <0.00%> (ø)
resources/js/components/Room/SettingsComponent.vue	86.20% <ø> (ø)
resources/js/plugins/Dayjs.js	0.00% <0.00%> (ø)
resources/js/store/modules/session.js	79.31% <0.00%> (-2.84%)	⬇️
resources/js/views/meetings/Index.vue	94.73% <ø> (ø)
resources/js/views/rooms/View.vue	67.92% <75.00%> (+23.02%)	⬆️
... and 36 more

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[dsst95]

The first part of the review. So you can already make fixes or answer my questions.