Tests for review_related model and schema

[Jeshan7]

Why?

• Test for product_review and review(schema) was not present.
• Factory for review and product review was not present.
• Refactored the product_review and review (model tests).

This change addresses the need by:

• Test for product_review and review are added.(schema)
  • Factory for review and product_review is now present.
  • Refactored the product_review and review(model tests).
  • Made a change in review.ex (schema). user_id was needed to be included but it was not included in update_params. (Added user_id attribute to @update_params)

[delivers #163622129]

Checklist

• [ ] I have read CONTRIBUTING.md.
• [ ] My code follows the style guidelines of this project.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [ ] My code does not generate any (new) credo and compile-time warnings.
• [ ] I have updated the documentation wherever necessary.
• [ ] I have added tests to cover my changes.

[codecov[bot]]

Codecov Report

Merging #471 into develop will increase coverage by 0.13%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #471      +/-   ##
===========================================
+ Coverage    79.73%   79.87%   +0.13%     
===========================================
  Files          176      176              
  Lines         2216     2216              
===========================================
+ Hits          1767     1770       +3     
+ Misses         449      446       -3

Impacted Files	Coverage Δ
.../snitch_core/lib/core/data/model/product_review.ex	96.77% <0%> (+3.22%)	:arrow_up:
...core/lib/core/data/schema/review/product_review.ex	100% <0%> (+25%)	:arrow_up:
apps/snitch_core/lib/core/data/model/review.ex	100% <0%> (+33.33%)	:arrow_up:

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