chore: finalize Solo migration

[nathanklick]

Description

This pull request changes the following:

• Removes the Solo code from the repository.
• Updates the Gradle build to reflect the removal of Solo.
• Updates the CI workflows to reflect the removal of Solo.

Related Issues

• Closes CLI[Solo]: Finalize the migration of the code to the Solo repository #765
• Related to Final code synchronization and removal from source repository solo#8
• Depends on chore: final Solo code synchronization solo#25

[github-actions]

Unit Test Results

  26 files  ±0    26 suites  ±0   51s ⏱️ -4s
109 tests ±0  105 ✔️ ±0  4 💤 ±0  0 ❌ ±0 
110 runs  ±0  106 ✔️ ±0  4 💤 ±0  0 ❌ ±0 

Results for commit 8e2d05a. ± Comparison against base commit 029b31c.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (029b31c) 67.17% compared to head (8e2d05a) 67.17%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #766   +/-   ##
=========================================
  Coverage     67.17%   67.17%           
  Complexity      339      339           
=========================================
  Files            64       64           
  Lines          1319     1319           
  Branches        157      157           
=========================================
  Hits            886      886           
  Misses          370      370           
  Partials         63       63           

[sonarcloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[swirlds-automation]

🎉 This PR is included in version 0.22.0 🎉

The release is available on GitHub release

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