chore: SAST tool

[mineme0110]

Description

SAST tool Needed

still need to:

1. Set up SonarCloud (free for open source):
   - Visit https://sonarcloud.io
   - Sign in with GitHub
   - Import hyperledger-identus/cloud-agent repository
2. Add GitHub Secret:
   - Generate token in SonarCloud: Project → Administration → Security
   - Add to GitHub: Settings → Secrets and variables → Actions → New secret
   - Name: SONAR_TOKEN
   - Value:

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]

Integration Test Results

 24 files  ±0   24 suites  ±0   3s ⏱️ ±0s
 61 tests ±0   61 ✅ ±0  0 💤 ±0  0 ❌ ±0 
113 runs  ±0  113 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 4040b08. ± Comparison against base commit adc81b1.

♻️ This comment has been updated with latest results.

[github-actions]

Unit Test Results

106 files  ±0  106 suites  ±0   19m 0s ⏱️ -46s
899 tests ±0  891 ✅ ±0  8 💤 ±0  0 ❌ ±0 
906 runs  ±0  898 ✅ ±0  8 💤 ±0  0 ❌ ±0 

Results for commit 4040b08. ± Comparison against base commit adc81b1.

♻️ This comment has been updated with latest results.

[coveralls]

coverage: 47.662%. remained the same
when pulling 4040b08 on add-sonarcube-sast-tool
into adc81b1 on main.