eorm: ShardingInserter 修改为表维度执行

[codecov[bot]]

Codecov Report

Merging #211 (1e5e967) into dev (312a927) will increase coverage by 0.14%. The diff coverage is 85.71%.

:exclamation: Current head 1e5e967 differs from pull request most recent head c583095. Consider uploading reports for the commit c583095 to get more accurate results

@@            Coverage Diff             @@
##              dev     #211      +/-   ##
==========================================
+ Coverage   85.50%   85.65%   +0.14%     
==========================================
  Files          48       48              
  Lines        3692     3653      -39     
==========================================
- Hits         3157     3129      -28     
+ Misses        423      415       -8     
+ Partials      112      109       -3     

Impacted Files	Coverage Δ
sharding_insert.go	79.87% <81.25%> (+1.55%)	:arrow_up:
builder.go	85.96% <100.00%> (ø)
internal/datasource/masterslave/master_slave_db.go	76.74% <100.00%> (ø)
sharding_update.go	85.63% <100.00%> (ø)

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