Move object method bodies into a separate class when original class is too large

[Nadeeshan96]

Purpose

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$title
Fixes #41279

Approach

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Samples

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Remarks

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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

[Nadeeshan96]

It is not good to always split the Ballerina classes because it will have unnecessary overhead. So we will only split if the jvm class will be too large (if it have more than 100 methods). In the PR, I have temperorily sent a commit to always split the class to find whether all the cases are passing for now. @NipunaRanasinghe Now the debugger tests will fail (https://scans.gradle.com/s/327ej7fmt3srq/tests/overview?outcome=FAILED).

We can use some criteria such as the class name to find the split classes and fix the failing tests. Then we can revert the commit and that should not result in test failures if our fix is right, and we can merge the PR.

[Nadeeshan96]

Tested the fix with a service have about 400 resource functions, and it worked fine.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (7d548e5) 76.71% compared to head (35bc64f) 76.72%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
...lang/compiler/bir/codegen/methodgen/MethodGen.java	98.11%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #41409      +/-   ##
============================================
+ Coverage     76.71%   76.72%   +0.01%     
- Complexity    52667    52686      +19     
============================================
  Files          2880     2879       -1     
  Lines        198580   198651      +71     
  Branches      25801    25808       +7     
============================================
+ Hits         152334   152421      +87     
+ Misses        37812    37800      -12     
+ Partials       8434     8430       -4     

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[Nadeeshan96]

Sonarcloud scan is failing due to #41539.

[github-actions]

This PR has been open for more than 15 days with no activity. This will be closed in 3 days unless the stale label is removed or commented.

[warunalakshitha]

LGTM

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
7 Code Smells

0.0% Coverage
0.0% Duplication

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