Implement dead code elimination

[heshanpadmasiri]

Purpose

Merge the optimization in #43013 with master

Fixes #43111

Approach

For a detailed explanation please checkout the original PR (#43013)

Samples

Provide high-level details about the samples related to this feature.

Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

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 80.68783% with 292 lines in your changes missing coverage. Please review.

Project coverage is 77.57%. Comparing base (66f7b52) to head (f94714b).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
.../java/io/ballerina/projects/JBallerinaBackend.java	79.83%	31 Missing and 17 partials ⚠️
...ava/io/ballerina/projects/UsedBIRNodeAnalyzer.java	86.76%	16 Missing and 27 partials ⚠️
...wso2/ballerinalang/compiler/bir/model/BIRNode.java	52.83%	20 Missing and 5 partials ⚠️
...c/main/java/io/ballerina/projects/JarResolver.java	61.29%	14 Missing and 10 partials ⚠️
.../compiler/semantics/model/SimpleBTypeAnalyzer.java	77.01%	19 Missing and 1 partial ⚠️
...lerina/projects/util/CodegenOptimizationUtils.java	66.66%	8 Missing and 7 partials ⚠️
...java/org/ballerinalang/compiler/CompilerPhase.java	8.33%	10 Missing and 1 partial ⚠️
...n/bytecodeoptimizer/NativeDependencyOptimizer.java	88.65%	4 Missing and 7 partials ⚠️
...ir/codegen/bytecodeoptimizer/ClassNodeVisitor.java	77.27%	8 Missing and 2 partials ⚠️
...ina/projects/DeadCodeEliminationReportEmitter.java	87.83%	8 Missing and 1 partial ⚠️
... and 28 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #43112      +/-   ##
============================================
+ Coverage     77.55%   77.57%   +0.01%     
- Complexity    58722    59141     +419     
============================================
  Files          3447     3465      +18     
  Lines        219658   221084    +1426     
  Branches      28915    29101     +186     
============================================
+ Hits         170365   171499    +1134     
- Misses        39892    40093     +201     
- Partials       9401     9492      +91     

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[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.

[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.

[heshanpadmasiri]

Closed in favor of #43560