Add row_count on Table

[pankajastro]

Description

closes: #1073

Add row_count property in BaseTable class.
Fixed the extractor tests accordingly

What is the current behavior?

We do not have a way to get table row count

What is the new behavior?

Add row_count property in BaseTable class

Does this introduce a breaking change?

No

Checklist

• Created tests which fail without the change (if possible)
• Extended the README / documentation, if necessary

[codecov]

Codecov Report

Base: 97.16% // Head: 94.25% // Decreases project coverage by -2.91% ⚠️

Coverage data is based on head (378bb61) compared to base (03fecd6).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1074      +/-   ##
==========================================
- Coverage   97.16%   94.25%   -2.92%     
==========================================
  Files          11       64      +53     
  Lines         318     2839    +2521     
  Branches       30      312     +282     
==========================================
+ Hits          309     2676    +2367     
- Misses          5      112     +107     
- Partials        4       51      +47     

Impacted Files	Coverage Δ
python-sdk/src/astro/table.py	100.00% <100.00%> (ø)
sql-cli/sql_cli/project.py	85.41% <0.00%> (-14.59%)	⬇️
sql-cli/sql_cli/configuration.py	100.00% <0.00%> (ø)
python-sdk/src/astro/sql/__init__.py	90.00% <0.00%> (ø)
python-sdk/src/astro/utils/typing_compat.py	66.66% <0.00%> (ø)
python-sdk/src/astro/airflow/datasets.py	85.71% <0.00%> (ø)
...thon-sdk/src/astro/sql/operators/base_decorator.py	94.16% <0.00%> (ø)
python-sdk/src/astro/settings.py	100.00% <0.00%> (ø)
python-sdk/src/astro/sql/operators/drop.py	100.00% <0.00%> (ø)
python-sdk/src/astro/lineage/extractor.py	100.00% <0.00%> (ø)
... and 46 more

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[sunank200]

Overall LGTM. Can we resolve the comments, please?