add insert statement parser

[tuohai666]

#168

[codecov-commenter]

Codecov Report

Merging #317 (b9b2b2d) into master (29a815a) will not change coverage.
The diff coverage is 0.00%.

@@          Coverage Diff           @@
##           master    #317   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files         385     386    +1     
  Lines        6639    6664   +25     
  Branches     1138    1143    +5     
======================================
- Misses       6639    6664   +25     

Impacted Files	Coverage Δ
...shardingsphere/common/handler/CommonAssembler.java	0.00% <0.00%> (ø)
...phere/common/handler/InsertStatementAssembler.java	0.00% <0.00%> (ø)
...phere/common/handler/UpdateStatementAssembler.java	0.00% <0.00%> (ø)

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