[sql-cli] Implement load file operator

[pankajkoti]

Description

What is the current behavior?

Currently, we are not having a way for users to load data into databases.

closes: #1227

What is the new behavior?

Add load_file / LoadFileOperator to the sql-cli.

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: 94.13% // Head: 95.08% // Increases project coverage by +0.94% 🎉

Coverage data is based on head (8fc841a) compared to base (f50be8d).
Patch coverage: 97.12% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1258      +/-   ##
==========================================
+ Coverage   94.13%   95.08%   +0.94%     
==========================================
  Files          17       71      +54     
  Lines         597     3296    +2699     
  Branches       67      380     +313     
==========================================
+ Hits          562     3134    +2572     
- Misses         22      100      +78     
- Partials       13       62      +49     

Impacted Files	Coverage Δ
sql-cli/sql_cli/utils/airflow.py	82.08% <ø> (+2.67%)	⬆️
sql-cli/sql_cli/utils/rich.py	88.23% <88.23%> (ø)
sql-cli/sql_cli/dag_generator.py	93.33% <94.44%> (ø)
sql-cli/sql_cli/workflow_directory_parser.py	97.84% <97.84%> (ø)
sql-cli/sql_cli/__init__.py	100.00% <100.00%> (ø)
sql-cli/sql_cli/__main__.py	99.06% <100.00%> (+1.84%)	⬆️
sql-cli/sql_cli/connections.py	100.00% <100.00%> (ø)
sql-cli/sql_cli/constants.py	100.00% <100.00%> (ø)
sql-cli/sql_cli/dag_render.py	100.00% <100.00%> (+11.11%)	⬆️
sql-cli/sql_cli/exceptions.py	100.00% <100.00%> (ø)
... and 59 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[feluelle]

LGTM 👍

Let's only fix the remaining failed SQL CLI test.

All other failing tests are related to python-sdk. :(