Complete insert statement

[soulasuna]

Complete insert statement

For #11661

Changes proposed in this pull request:

• Add shadow statement validator.
• Optimize the xml configuration tag name.
• Add future shadow example.

[codecov-commenter]

Codecov Report

Merging #12186 (4261f8f) into master (1301a41) will decrease coverage by 0.04%.
The diff coverage is 50.00%.

@@             Coverage Diff              @@
##             master   #12186      +/-   ##
============================================
- Coverage     63.73%   63.69%   -0.05%     
- Complexity     1258     1259       +1     
============================================
  Files          2327     2330       +3     
  Lines         35413    35445      +32     
  Branches       6161     6169       +8     
============================================
+ Hits          22570    22576       +6     
- Misses        11029    11050      +21     
- Partials       1814     1819       +5     

Impacted Files	Coverage Δ
...e/shardingsphere/shadow/route/ShadowSQLRouter.java	81.63% <0.00%> (-7.26%)	⬇️
...ine/validator/ShadowStatementValidatorFactory.java	0.00% <0.00%> (ø)
.../validator/dml/ShadowInsertStatementValidator.java	0.00% <0.00%> (ø)
...engine/dml/ShadowInsertStatementRoutingEngine.java	71.42% <50.00%> (-17.47%)	⬇️
...ner/algorithm/ColumnShadowAlgorithmDeterminer.java	90.00% <87.50%> (+3.04%)	⬆️
...d/text/distsql/ral/common/hint/HintSourceType.java	0.00% <0.00%> (-42.86%)	⬇️
...ster/governance/registry/cache/node/CacheNode.java	75.00% <0.00%> (-25.00%)	⬇️
...ter/governance/registry/state/node/StatesNode.java	72.22% <0.00%> (-6.95%)	⬇️
...re/agent/core/plugin/PluginBootServiceManager.java	0.00% <0.00%> (ø)
...sphere/proxy/initializer/BootstrapInitializer.java	0.00% <0.00%> (ø)
... and 17 more

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