fix(cubesql): Support new meta queries for QuickSight's Redshift driver

[MazterQyou]

Check List

• Tests has been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Description of Changes Made

This PR fixes compatibility with QuickSight's Redshift driver by supporting new meta queries. Changes include:

• pg_catalog.pg_external_schema meta table support
• information_schema.sql_sizing meta table support
• stv_slices meta table support
• regexp_instr function execution support
• workarounds for Redshift-specific behavior: FROM subquery without an alias, self-referencing expressions in SELECT, WHERE expressions referencing SELECT expressions by alias

Related tests are included.

[codecov]

Codecov Report

Attention: Patch coverage is 91.16998% with 40 lines in your changes missing coverage. Please review.

Project coverage is 82.67%. Comparing base (7096242) to head (fd668e6).
Report is 16 commits behind head on master.

Files with missing lines	Patch %	Lines
...cubesql/cubesql/src/compile/engine/udf/redshift.rs	79.12%	19 Missing ⚠️
.../information_schema/redshift/pg_external_schema.rs	84.48%	9 Missing ⚠️
...e/engine/information_schema/redshift/stv_slices.rs	86.36%	9 Missing ⚠️
...e/engine/information_schema/postgres/sql_sizing.rs	97.43%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8716      +/-   ##
==========================================
+ Coverage   82.62%   82.67%   +0.04%     
==========================================
  Files         212      216       +4     
  Lines       77343    78061     +718     
==========================================
+ Hits        63906    64536     +630     
- Misses      13437    13525      +88     

Flag	Coverage Δ
cubesql	82.67% <91.16%> (+0.04%)	⬆️

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