Address sql injection duckdb

[sundarshankar89]

Summary

Adds SQL injection protection for DuckDB table name.
Made design choice by limiting the name pattern in pipline config since this only expected to be used for information schema extracts.

• Security
  • Added regex validation for step names to prevent SQL injection in DuckDB table identifiers
  • Validates step names must start with letter/underscore and contain only alphanumeric characters and underscores
  • Validates mode and type fields to ensure only recognized values are accepted
  • Validation occurs at config creation time (Step.post_init) to fail fast

Resolves #..

Functionality

• added relevant user documentation
• added new CLI command
• modified existing command: databricks labs lakebridge ...
• ... +add your own

Tests

• manually tested
• added unit tests
• added integration tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.15%. Comparing base (7f34625) to head (367194d).

Additional details and impacted files

@@                       Coverage Diff                       @@
##           feature/typed-table-schemas    #2278      +/-   ##
===============================================================
+ Coverage                        64.05%   64.15%   +0.09%     
===============================================================
  Files                               99       99              
  Lines                             8859     8880      +21     
  Branches                           920      925       +5     
===============================================================
+ Hits                              5675     5697      +22     
+ Misses                            3009     3008       -1     
  Partials                           175      175              

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[github-actions]

✅ 133/133 passed, 7 flaky, 5 skipped, 10m28s total

Flaky tests:

• 🤪 test_installs_and_runs_local_bladebridge (21.436s)
• 🤪 test_installs_and_runs_pypi_bladebridge (31.058s)
• 🤪 test_transpiles_informatica_to_sparksql (18.979s)
• 🤪 test_transpile_teradata_sql (21.021s)
• 🤪 test_transpiles_informatica_to_sparksql_non_interactive[False] (4.067s)
• 🤪 test_transpile_teradata_sql_non_interactive[True] (5.845s)
• 🤪 test_transpile_teradata_sql_non_interactive[False] (5.491s)

_{Running from acceptance #3688}

[gueniai]

LGTM