[2201.8.x] Move object method bodies into a separate class when original class is too large

[Nadeeshan96]

Purpose

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$title
Duplicate PR of #41409.
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

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (4951240) 76.34% compared to head (4d64855) 76.36%.
Report is 10 commits behind head on 2201.8.x.

Additional details and impacted files

@@              Coverage Diff               @@
##             2201.8.x   #41647      +/-   ##
==============================================
+ Coverage       76.34%   76.36%   +0.01%     
- Complexity      52518    52537      +19     
==============================================
  Files            2881     2880       -1     
  Lines          198587   198669      +82     
  Branches        25802    25810       +8     
==============================================
+ Hits           151615   151706      +91     
+ Misses          38614    38612       -2     
+ Partials         8358     8351       -7     

Files	Coverage Δ
.../ballerina/runtime/internal/values/ErrorValue.java	84.09% <100.00%> (ø)
...lerina/runtime/internal/values/TableValueImpl.java	82.51% <100.00%> (+0.41%)	⬆️
.../java/io/ballerina/projects/JBallerinaBackend.java	77.56% <100.00%> (ø)
...erinalang/compiler/bir/codegen/JvmCodeGenUtil.java	93.33% <100.00%> (+0.03%)	⬆️
...llerinalang/compiler/bir/codegen/JvmConstants.java	100.00% <ø> (ø)
...nalang/compiler/bir/codegen/JvmInstructionGen.java	90.39% <100.00%> (ø)
...lerinalang/compiler/bir/codegen/JvmPackageGen.java	89.16% <100.00%> (ø)
...inalang/compiler/bir/codegen/JvmTerminatorGen.java	85.05% <ø> (ø)
...allerinalang/compiler/bir/codegen/JvmValueGen.java	96.21% <100.00%> (+3.11%)	⬆️
...lang/compiler/bir/codegen/ShutDownListenerGen.java	100.00% <100.00%> (ø)
... and 23 more

... and 5 files with indirect coverage changes

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[warunalakshitha]

LGTM