Add full build pipeline for stage and 2201.x.x branch pull requests

[chiranSachintha]

Purpose

$title.

Fixes #

Approach

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

Samples

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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

All modified and coverable lines are covered by tests ✅

Project coverage is 77.40%. Comparing base (b0c3210) to head (7320766).
Report is 3 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #43681      +/-   ##
============================================
- Coverage     77.40%   77.40%   -0.01%     
+ Complexity    58584    58583       -1     
============================================
  Files          3445     3445              
  Lines        219049   219049              
  Branches      28961    28961              
============================================
- Hits         169561   169556       -5     
- Misses        40067    40072       +5     
  Partials       9421     9421              

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