SMQ-3108 - Add support for public and private metadata for users and clients

[felixgateru]

What type of PR is this?

This is a feature as it adds support for private and public metadata for Users and Clients

What does this do?

This pr:

• adds a database column for public metadata and subsequent changes to Users and Clients structs

Which issue(s) does this PR fix/relate to?

• Related Issue Add public metadata to Users and Clients #3108
• Resolves Add public metadata to Users and Clients #3108

Have you included tests for your changes?

Yes, tests have been updated.

Did you document any new/modified feature?

Yes, api docs have been updated for the changes

Notes

[codecov]

Codecov Report

❌ Patch coverage is 81.08108% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.51%. Comparing base (af424ee) to head (9fefd43).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
clients/postgres/clients.go	75.00%	12 Missing and 3 partials ⚠️
users/events/events.go	0.00%	9 Missing ⚠️
clients/events/events.go	0.00%	6 Missing ⚠️
users/postgres/users.go	92.75%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3155      +/-   ##
==========================================
+ Coverage   34.49%   41.51%   +7.02%     
==========================================
  Files         318      122     -196     
  Lines       46477    24421   -22056     
==========================================
- Hits        16030    10138    -5892     
+ Misses      29651    13771   -15880     
+ Partials      796      512     -284     

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