Add view counters to trips and user profiles

[anorthall]

Add view counters to trips and user profiles, which are only viewable by the user that created the object.

[sourcery-ai]

PR Type: Enhancement

PR Summary: The pull request introduces view counters for trips and user profiles, ensuring that these counters are only incremented by views from other users and not by the creators themselves. It includes model updates, view logic to handle the incrementing of view counts, and migrations to add the necessary fields to the database.

General suggestions:

• Ensure that the control flow changes in the get_trips_context function are intentional and correctly handle the EmptyPage exception scenario.
• Consider refactoring the add_view method to maintain separation of concerns, possibly by moving the user check logic to the view or service layer.
• Review the implementation to prevent potential double counting of views, especially where bulk_update_view_count is called in multiple places.
• Reevaluate the placement of the add_profile_view method call within the setup method of the UserProfile view to align with the typical Django view lifecycle.
• Add a guard clause in the bulk_update_view_count function to gracefully handle the case where the trips iterable is empty.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7bf51df) 86.65% compared to head (9d6058a) 86.74%.

❗ Current head 9d6058a differs from pull request most recent head bff5326. Consider uploading reports for the commit bff5326 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #219      +/-   ##
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+ Coverage   86.65%   86.74%   +0.08%     
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  Files          89       89              
  Lines        4332     4360      +28     
  Branches      564      568       +4     
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+ Hits         3754     3782      +28     
  Misses        482      482              
  Partials       96       96              

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