feat(Spanner): implement initial SQL Server source connector and DML generation support for Spanner-to-SourceDB migration

[pratickchokhani]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 11.50794% with 223 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.75%. Comparing base (eafec1b) to head (ed7a509).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...plates/source/sqlserver/SQLServerDMLGenerator.java	0.70%	141 Missing ⚠️
...r/sourceddl/SQLServerInformationSchemaScanner.java	0.00%	49 Missing ⚠️
...rce/sqlserver/SQLServerSpToSrcSourceConnector.java	41.02%	22 Missing and 1 partial ⚠️
...er/migrations/connection/JdbcConnectionHelper.java	47.36%	8 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (11.50%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4189      +/-   ##
============================================
+ Coverage     55.90%   62.75%   +6.84%     
+ Complexity     7476     2798    -4678     
============================================
  Files          1134      565     -569     
  Lines         70144    32896   -37248     
  Branches       8016     3697    -4319     
============================================
- Hits          39214    20643   -18571     
+ Misses        28382    11204   -17178     
+ Partials       2548     1049    -1499     

Components	Coverage Δ
spanner-templates	83.66% <11.50%> (-0.99%)	⬇️
spanner-import-export	∅ <ø> (∅)
spanner-live-forward-migration	87.88% <15.71%> (-0.78%)	⬇️
spanner-live-reverse-replication	79.37% <11.50%> (-1.90%)	⬇️
spanner-bulk-migration	88.63% <15.71%> (-0.43%)	⬇️
gcs-spanner-dv	86.98% <15.71%> (-0.89%)	⬇️

Files with missing lines	Coverage Δ
...r/migrations/source/config/SourceConfigParser.java	79.54% <ø> (ø)
...2/spanner/migrations/source/config/SourceType.java	100.00% <100.00%> (ø)
...ates/dbutils/processor/SourceProcessorFactory.java	96.29% <100.00%> (+0.14%)	⬆️
...er/migrations/connection/JdbcConnectionHelper.java	80.89% <47.36%> (-6.83%)	⬇️
...rce/sqlserver/SQLServerSpToSrcSourceConnector.java	41.02% <41.02%> (ø)
...r/sourceddl/SQLServerInformationSchemaScanner.java	0.00% <0.00%> (ø)
...plates/source/sqlserver/SQLServerDMLGenerator.java	0.70% <0.70%> (ø)

... and 594 files with indirect coverage changes

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