Add supersql dbtype.

[lingo-xp]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 59.66%. Comparing base (f869c9f) to head (5a2671c).
Report is 44 commits behind head on master.

Files with missing lines	Patch %	Lines
...alibaba/druid/sql/visitor/SQLASTOutputVisitor.java	0.00%	0 Missing and 3 partials ⚠️
...a/com/alibaba/druid/sql/ast/expr/SQLExprUtils.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6307      +/-   ##
============================================
- Coverage     59.71%   59.66%   -0.06%     
- Complexity    29595    29850     +255     
============================================
  Files          1461     1473      +12     
  Lines        134348   135516    +1168     
  Branches      24899    25157     +258     
============================================
+ Hits          80227    80852     +625     
- Misses        43882    44317     +435     
- Partials      10239    10347     +108     

Files with missing lines	Coverage Δ
core/src/main/java/com/alibaba/druid/DbType.java	90.32% <100.00%> (+0.10%)	⬆️
...rc/main/java/com/alibaba/druid/sql/PagerUtils.java	69.19% <ø> (ø)
.../src/main/java/com/alibaba/druid/sql/SQLUtils.java	39.87% <ø> (-0.34%)	⬇️
...va/com/alibaba/druid/sql/ast/expr/SQLTimeExpr.java	21.59% <ø> (ø)
.../alibaba/druid/sql/builder/SQLFunctionBuilder.java	0.00% <ø> (ø)
...sql/dialect/mysql/parser/MySqlStatementParser.java	64.15% <ø> (-0.08%)	⬇️
...a/com/alibaba/druid/sql/parser/SQLParserUtils.java	11.07% <ø> (ø)
...c/main/java/com/alibaba/druid/wall/WallFilter.java	49.62% <ø> (ø)
...a/com/alibaba/druid/sql/ast/expr/SQLExprUtils.java	30.66% <0.00%> (ø)
...alibaba/druid/sql/visitor/SQLASTOutputVisitor.java	70.02% <0.00%> (+0.15%)	⬆️

... and 34 files with indirect coverage changes

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