feat: create observer for legal hold request (WPB-5442)

[ohassine]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Description

In this PR, I created an observer that will observe legal hold request that is stored locally.
It will return LegalHoldRequestAvailable with the fingerprint if there is a request , NoLegalHoldRequest in case no request is pending and failure in case of something went wrong

Note:

This PR includes changes from #2236, please review it before this one

Needs releases with:

• GitHub link to other pull request

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[github-actions]

Unit Test Results

   399 files   -   76     399 suites   - 76   22s ⏱️ - 2m 6s
2 328 tests  - 321  2 237 ✔️  - 308  91 💤  - 13  0 ❌ ±0 

Results for commit 7651d7b. ± Comparison against base commit 802a22e.

♻️ This comment has been updated with latest results.

[datadog-wireapp]

Datadog Report

All test runs 14e0c90 🔗

✅ 2 Total Test Services: 0 Failed, 0 with New Flaky, 2 Passed

Test Services

Service Name	Failed	Known Flaky	New Flaky	Passed	Skipped	Wall Time	Branch View
kalium-ios	0	0	0	2237	91	7m 18.1s	Link
kalium-jvm	0	0	0	2549	104	7m 15.05s	Link

[Garzas]

Looking good 🚀 Just small comment about logger

[codecov-commenter]

Codecov Report

Merging #2243 (7651d7b) into develop (802a22e) will decrease coverage by 0.02%.
The diff coverage is 34.21%.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #2243      +/-   ##
=============================================
- Coverage      57.94%   57.93%   -0.02%     
  Complexity        21       21              
=============================================
  Files           1082     1084       +2     
  Lines          41053    41084      +31     
  Branches        3798     3801       +3     
=============================================
+ Hits           23789    23801      +12     
- Misses         15640    15659      +19     
  Partials        1624     1624              

Files	Coverage Δ
...tlin/com/wire/kalium/cryptography/ProteusClient.kt	87.50% <ø> (ø)
...com/wire/kalium/logic/data/legalhold/LastPreKey.kt	100.00% <100.00%> (ø)
...re/kalium/logic/data/legalhold/LegalHoldRequest.kt	100.00% <100.00%> (ø)
...com/wire/kalium/persistence/dao/MetadataDAOImpl.kt	73.68% <ø> (ø)
...ire/kalium/persistence/dao/unread/UserConfigDAO.kt	26.66% <0.00%> (ø)
...kalium/cryptography/ProteusClientCoreCryptoImpl.kt	47.05% <0.00%> (-1.73%)	⬇️
.../wire/kalium/logic/data/prekey/PreKeyRepository.kt	65.06% <16.66%> (-4.18%)	⬇️
...logic/feature/legalhold/LegalHoldRequestUseCase.kt	61.53% <61.53%> (ø)
...kalium/logic/configuration/UserConfigRepository.kt	48.64% <0.00%> (-2.42%)	⬇️

... and 1 file with indirect coverage changes

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