[Debugger] Add support for restart requests

[NipunaRanasinghe]

Purpose

This PR

• implements support for Restart requests in the Ballerina debug server.
• adds required integration tests

Here's a quick glance of the new feature, where the debug server manages restart requests and handles subsequent debug sessions using the same server instance.

Screen.Recording.2024-12-04.at.13.47.24.mov

Resolves #43679

Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 26 lines in your changes missing coverage. Please review.

Project coverage is 77.31%. Comparing base (1c5a1c1) to head (55cee50).
Report is 1010 commits behind head on 2201.11.0-stage.

Files with missing lines	Patch %	Lines
...lerinalang/debugadapter/JBallerinaDebugServer.java	62.29%	20 Missing and 3 partials ⚠️
.../ballerinalang/debugadapter/JDIEventProcessor.java	86.36%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##             2201.11.0-stage   #43684      +/-   ##
=====================================================
- Coverage              77.39%   77.31%   -0.08%     
- Complexity             58585    58770     +185     
=====================================================
  Files                   3445     3524      +79     
  Lines                 219112   221413    +2301     
  Branches               28967    28772     -195     
=====================================================
+ Hits                  169583   171187    +1604     
- Misses                 40105    40581     +476     
- Partials                9424     9645     +221     

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