Implement Support for Generation of Optional Record Fields and Proper Namespaces

[AzeemMuzammil]

Purpose

This PR contains improvements to the XML to Record converter tools, below are the improvements added.

• Now nested XMLs with differencing nodes are being handled [Improvement]: Handle intersecting and differencing fields of the XML nodes with same name #41310
• Namespace generation workes properly.

Approach

Describe how you are implementing the solutions along with the design details.

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: 23 lines in your changes are missing coverage. Please review.

Comparison is base (75f1758) 76.71% compared to head (325c43b) 76.74%.
Report is 367 commits behind head on master.

Files	Patch %	Lines
...rina/xmltorecordconverter/util/ConverterUtils.java	62.85%	10 Missing and 3 partials ⚠️
...ina/xmltorecordconverter/XMLToRecordConverter.java	93.19%	4 Missing and 6 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #41594      +/-   ##
============================================
+ Coverage     76.71%   76.74%   +0.02%     
- Complexity    52734    52758      +24     
============================================
  Files          2878     2878              
  Lines        198735   198848     +113     
  Branches      25832    25846      +14     
============================================
+ Hits         152453   152598     +145     
+ Misses        37869    37820      -49     
- Partials       8413     8430      +17     

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[github-actions]

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