feat: add blob type

[laysakura]

Issue number and link

Fixes: #160

Describe your changes

• Add BLOB type in syntax
• Add SqlValue::Blob and its mutual translation to/from Vec<u8>

Note that we do not have any way to perform e2e testing because no source readers / sink writers support binary payload.

Checklist before requesting a review

• I follow the Semantic Pull Requests rules (bugfix/feature)
• I specified links to related issues (must: bugfix, want: feature)
• I have performed a self-review of my code (bugfix/feature)
• I have added thorough tests (bugfix/feature)
• I have edited ## [Unreleased] section in CHANGELOG.md following keep a changelog syntax (bugfix/feature)
• I {made/will make} a related pull request for documentation repo (feature)

[codecov]

Codecov Report

Merging #187 (fd63318) into main (32ee55e) will decrease coverage by 0.07%.
The diff coverage is 43.18%.

@@            Coverage Diff             @@
##             main     #187      +/-   ##
==========================================
- Coverage   87.43%   87.36%   -0.08%     
==========================================
  Files         203      204       +1     
  Lines       12032    12076      +44     
==========================================
+ Hits        10520    10550      +30     
- Misses       1512     1526      +14     

Impacted Files	Coverage Δ
springql-core/src/pipeline/relation/sql_type.rs	81.25% <0.00%> (-8.41%)	⬇️
...e/autonomous_executor/row/value/sql_convertible.rs	0.00% <0.00%> (ø)
...e/src/sql_processor/sql_parser/pest_parser_impl.rs	87.14% <42.85%> (-0.59%)	⬇️
...onomous_executor/row/value/sql_convertible/blob.rs	50.00% <50.00%> (ø)
...omous_executor/row/value/sql_value/nn_sql_value.rs	65.53% <55.55%> (-0.96%)	⬇️
..._engine/autonomous_executor/row/value/sql_value.rs	75.51% <0.00%> (+0.68%)	⬆️
...ql_processor/sql_parser/pest_parser_impl/helper.rs	92.85% <0.00%> (+14.28%)	⬆️

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