feat(backend): return all the owner's tickets

[0xLucqs]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 95.45455% with 1 line in your changes missing coverage. Please review.

Project coverage is 80.57%. Comparing base (0ec8231) to head (7623ef2).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
backend/lib/peach/ticket.ex	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   77.27%   80.57%   +3.29%     
==========================================
  Files          17       19       +2     
  Lines         154      175      +21     
==========================================
+ Hits          119      141      +22     
+ Misses         35       34       -1     

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