feat: support single quote string literal

[Rui-Gan]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.12 ⚠️

Comparison is base (dfa9b5e) 60.21% compared to head (a37115e) 60.09%.

❗ Current head a37115e differs from pull request most recent head d598ddd. Consider uploading reports for the commit d598ddd to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1974      +/-   ##
==========================================
- Coverage   60.21%   60.09%   -0.12%     
==========================================
  Files         274      274              
  Lines       31329    31231      -98     
==========================================
- Hits        18862    18767      -95     
+ Misses      10594    10583      -11     
- Partials     1873     1881       +8     

Impacted Files	Coverage Δ
pkg/ast/token.go	92.68% <ø> (ø)
internal/xsql/lexical.go	87.09% <100.00%> (+0.40%)	⬆️
internal/xsql/parser.go	75.17% <100.00%> (ø)

... and 13 files with indirect coverage changes

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[ngjaying]

What's the behavior of 'abc"' or "abc'cba" or "abc'

[Rui-Gan]

What's the behavior of 'abc"' or "abc'cba" or "abc'

'abc"'->abc"
"abc'cba" ->abc'cba
"abc'->invalid syntax