test: add backup and verification e2e scenarios

[amagyar-iohk]

Description:

Add end-to-end test for backup feature

Checklist:

• My PR follows the contribution guidelines of this project
• My PR is free of third-party dependencies that don't comply with the Allowlist
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked the PR title to follow the conventional commit specification

[github-actions]

Unit Test Results

150 tests  ±0   147 ✅ ±0   7s ⏱️ ±0s
 26 suites ±0     3 💤 ±0 
 26 files   ±0     0 ❌ ±0 

Results for commit 76dfadc. ± Comparison against base commit 778cb91.

♻️ This comment has been updated with latest results.

[coveralls]

Pull Request Test Coverage Report for Build 9799342739

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 35 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.001%) to 39.51%

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Files with Coverage Reduction	New Missed Lines	%
org/hyperledger/identus/walletsdk/pluto/PlutoRestoreTask.kt	35	67.35%

Totals
Change from base Build 9794631896:	0.001%
Covered Lines:	2620
Relevant Lines:	5896

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💛 - Coveralls

[elribonazo]

@amagyar-iohk what do to with this?

[cristianIOHK]

Looking good