[backend] Handle errors for payloads

[damgouj]

Proposed changes

• Handle errors for executable payload like command line payload

Related issues

• Closes Error on executable payload not handle correclty #1897

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

This PR is linked with an implant PR

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 33.62%. Comparing base (a20d4d6) to head (527221d).

Files with missing lines	Patch %	Lines
...ain/java/io/openbas/rest/injector/InjectorApi.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1933   +/-   ##
=========================================
  Coverage     33.62%   33.62%           
  Complexity     1671     1671           
=========================================
  Files           572      572           
  Lines         16697    16697           
  Branches        970      970           
=========================================
  Hits           5614     5614           
  Misses        10829    10829           
  Partials        254      254           

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