feat: support multi db in parse and add getDependenceTables

[vagetablechicken]

close #611, close #3304

[codecov]

Codecov Report

Patch coverage: 79.89% and project coverage change: -0.05 ⚠️

Comparison is base (bf4e614) 75.55% compared to head (36cfed8) 75.50%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3314      +/-   ##
============================================
- Coverage     75.55%   75.50%   -0.05%     
- Complexity      411      414       +3     
============================================
  Files           693      693              
  Lines        125974   126076     +102     
  Branches       1185     1189       +4     
============================================
+ Hits          95175    95197      +22     
- Misses        30561    30638      +77     
- Partials        238      241       +3     

Impacted Files	Coverage Δ
src/base/ddl_parser.h	100.00% <ø> (ø)
src/client/ns_client.h	100.00% <ø> (ø)
src/sdk/sql_cluster_router.h	0.00% <ø> (ø)
src/sdk/sql_router.cc	2.40% <0.00%> (-0.43%)	⬇️
src/sdk/sql_router.h	42.85% <ø> (ø)
src/tablet/tablet_impl.cc	65.34% <44.44%> (-0.06%)	⬇️
src/catalog/tablet_catalog.cc	71.61% <66.66%> (+0.07%)	⬆️
src/cmd/sql_cmd.h	28.05% <81.81%> (+2.13%)	⬆️
src/base/ddl_parser.cc	77.38% <85.85%> (-0.51%)	⬇️
src/base/ddl_parser_test.cc	92.62% <86.00%> (-2.08%)	⬇️
... and 5 more

... and 8 files with indirect coverage changes

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