[Backend] Refactor creation of inject expectations

[savacano28]

Proposed changes

• https://www.notion.so/filigran/Expectations-creation-workflow-10c8fce17f2a80b99d5cd9b0afa3a668
• This PR is a refactor to prepare the code for these bugs: When I launch a technical inject, expectations is created before the status is INJECT_EXECUTED #1832 and Manage the creation of injectExpectations by the Target/agent after the injection is successfully executed #1984

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

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

Attention: Patch coverage is 21.42857% with 22 lines in your changes missing coverage. Please review.

Project coverage is 33.56%. Comparing base (80194de) to head (12e664f).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...main/java/io/openbas/utils/AtomicTestingUtils.java	0.00%	4 Missing ⚠️
...openbas/injectors/challenge/ChallengeExecutor.java	25.00%	3 Missing ⚠️
.../io/openbas/injectors/channel/ChannelExecutor.java	25.00%	3 Missing ⚠️
.../java/io/openbas/injectors/ovh/OvhSmsExecutor.java	0.00%	3 Missing ⚠️
.../io/openbas/injectors/caldera/CalderaExecutor.java	0.00%	2 Missing ⚠️
...nbas/injectors/openbas/OpenBASImplantExecutor.java	0.00%	2 Missing ⚠️
.../io/openbas/injectors/opencti/OpenCTIExecutor.java	33.33%	2 Missing ⚠️
...n/java/io/openbas/injectors/lade/LadeExecutor.java	0.00%	1 Missing ⚠️
...o/openbas/injectors/mastodon/MastodonExecutor.java	0.00%	1 Missing ⚠️
...rc/main/java/io/openbas/rest/inject/InjectApi.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1986      +/-   ##
============================================
- Coverage     33.62%   33.56%   -0.07%     
+ Complexity     1671     1665       -6     
============================================
  Files           572      572              
  Lines         16697    16695       -2     
  Branches        970      970              
============================================
- Hits           5614     5603      -11     
- Misses        10829    10838       +9     
  Partials        254      254              

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