[2201.2.x Backport] Add support for XA transaction

[niveathika]

Purpose

$subject

Master branch PR: #467
Related to ballerina-platform/ballerina-library#3642

Examples

Enable the XA datasource using useXADatasource option

oracledb:Client dbClient = check new ("localhost", "admin", "password", "xe", 1521, options = {useXADatasource: true});

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests -> Manually tested due to a constraint in Oracle Docker
• Checked native-image compatibility

[codecov]

Codecov Report

Base: 85.38% // Head: 85.16% // Decreases project coverage by -0.21% ⚠️

Coverage data is based on head (f3292d2) compared to base (f4f2fe7).
Patch coverage: 60.00% of modified lines in pull request are covered.

Additional details and impacted files

@@              Coverage Diff               @@
##             2201.2.x     #466      +/-   ##
==============================================
- Coverage       85.38%   85.16%   -0.22%     
  Complexity        181      181              
==============================================
  Files              16       16              
  Lines             643      647       +4     
  Branches          136      137       +1     
==============================================
+ Hits              549      551       +2     
- Misses             51       52       +1     
- Partials           43       44       +1     

Impacted Files	Coverage Δ
...na/stdlib/oracledb/nativeimpl/ClientProcessor.java	92.30% <33.33%> (-4.99%)	⬇️
ballerina/client.bal	100.00% <100.00%> (ø)
...n/java/io/ballerina/stdlib/oracledb/Constants.java	100.00% <100.00%> (ø)

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