Add replying back to a message in a thread & Introduce module specific errors

[niveathika]

Purpose

Fixes: ballerina-platform/ballerina-library#5761
Fixes: ballerina-platform/ballerina-library#5762

Examples

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests
• Checked native-image compatibility

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (8b83725) 91.35% compared to head (612699b) 90.84%.
Report is 13 commits behind head on master.

❗ Current head 612699b differs from pull request most recent head 023f8a9. Consider uploading reports for the commit 023f8a9 to get more accurate results

Files	Patch %	Lines
ballerina/data_mappings.bal	95.23%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #248      +/-   ##
==========================================
- Coverage   91.35%   90.84%   -0.52%     
==========================================
  Files           7        7              
  Lines         868      874       +6     
  Branches      368      362       -6     
==========================================
+ Hits          793      794       +1     
- Misses         75       80       +5     

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