Add extract to local variable code action

[TharushiJay]

Purpose

This PR implements the Extract to local variable code action, which creates a new variable assigned to the expression currently selected and replaces the selection with a reference to the new variable.

Fixes https://github.com/ballerina-platform/ballerina-lang/issues/36569

Samples

https://user-images.githubusercontent.com/27485094/180998752-7a85074a-081a-4ac9-8e3b-762503cdbafb.mov

Check List

• [x] Read the Contributing Guide
• [ ] Updated Change Log
• [ ] Checked Tooling Support (#<Issue Number>)
• [x] Added necessary tests
  • [x] 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[bot]]

Codecov Report

Merging #37131 (944776c) into 2201.2.x (9ef3e47) will increase coverage by 0.01%. The diff coverage is 78.20%.

@@              Coverage Diff               @@
##             2201.2.x   #37131      +/-   ##
==============================================
+ Coverage       74.75%   74.77%   +0.01%     
- Complexity      50148    50237      +89     
==============================================
  Files            3338     3339       +1     
  Lines          193274   193459     +185     
  Branches        25258    25297      +39     
==============================================
+ Hits           144487   144663     +176     
+ Misses          40439    40430       -9     
- Partials         8348     8366      +18     

Impacted Files	Coverage Δ
...a/io/ballerina/shell/cli/handlers/HelpCommand.java	15.38% <0.00%> (ø)
...erina/shell/cli/handlers/help/BbeHelpProvider.java	18.75% <0.00%> (ø)
...rc/main/java/io/ballerina/cli/cmd/PullCommand.java	34.78% <0.00%> (-0.26%)	:arrow_down:
.../compiler/api/impl/SyntaxNodeToLocationMapper.java	87.77% <0.00%> (+1.11%)	:arrow_up:
...iler/api/impl/symbols/BallerinaConstantSymbol.java	80.85% <0.00%> (ø)
...lerina/compiler/api/impl/symbols/TypesFactory.java	73.64% <ø> (ø)
...c/main/java/io/ballerina/projects/JarResolver.java	76.14% <0.00%> (ø)
...nalang/langserver/commons/CodeActionExtension.java	50.00% <0.00%> (ø)
...ang/langserver/commons/DocumentServiceContext.java	0.00% <ø> (ø)
...s/codeaction/spi/ResolvableCodeActionProvider.java	0.00% <0.00%> (ø)
... and 147 more

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[mohanvive]

@gayalkuruppu Can you please check your review comments and update?

[gayalkuruppu]

@gayalkuruppu Can you please check your review comments and update?

Earlier comments are addressed but this should be reviewed again, will do

[gayalkuruppu]

@gayalkuruppu Can you please check your review comments and update?

Earlier comments are addressed but this should be reviewed again, will do As per the offline discussion, will post the bugs separately.