Mapping for querying tickets

[dukris]

@h1alexbel take a look, please
Closes #54

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PR-Codex overview

The focus of this PR is to enhance error handling in controllers and improve request parameter validation.

Detailed summary

• Added exception handling for IllegalArgumentException in AdviceController
• Updated TicketController to handle optional request parameters for job and number
• Added tests for error responses in RetrieveTicketByJobITCase and RetrieveTicketByNumberITCase
• Added test for empty request parameters in TicketControllerTest

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[h1alexbel]

@rultor try to merge

[rultor]

@rultor try to merge

@h1alexbel Thanks for your request; @hizmailovich please confirm this.

[dukris]

@rultor merge

[rultor]

@rultor merge

@hizmailovich OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@hizmailovich Done! FYI, the full log is here (took me 3min)