Feat/backend/view my bookings functionality

[Rethakgetse-Manaka]

Description

Fixed and refactored all Booking functions on the backend. All that is left for me to do is update the docs and do the unit tests. This PR is so that @KamogeloMoeketse can engage with the functions for integration.

Fixes # (issue)

Type of change

Booking functions refactored

Please delete options that are not relevant.

• New feature - View bookings is a new feature (non-breaking change which adds functionality)
• Breaking change - Requests sent in must be adapted (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Has not been tested yet

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.88%. Comparing base (03c88a8) to head (2c69ff6).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #55      +/-   ##
===========================================
+ Coverage    65.15%   72.88%   +7.72%     
===========================================
  Files            3        3              
  Lines          132      118      -14     
===========================================
  Hits            86       86              
+ Misses          43       29      -14     
  Partials         3        3              

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