refactor(datasource,rm): insert on update executor

[iSuperCoder]

Closes #441

What this PR does:

Which issue(s) this PR fixes:

Fixes #441

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Merging #456 (1eaea85) into master (437f712) will decrease coverage by 0.04%.
The diff coverage is 34.48%.

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@@            Coverage Diff             @@
##           master     #456      +/-   ##
==========================================
- Coverage   39.05%   39.02%   -0.04%     
==========================================
  Files         144      145       +1     
  Lines        9120     9638     +518     
==========================================
+ Hits         3562     3761     +199     
- Misses       5264     5565     +301     
- Partials      294      312      +18     

Impacted Files	Coverage Δ
pkg/client/client.go	0.00% <0.00%> (ø)
pkg/client/config.go	61.66% <ø> (ø)
pkg/datasource/sql/exec/at/at_executor.go	0.00% <0.00%> (ø)
pkg/datasource/sql/exec/at/delete_executor.go	23.23% <0.00%> (-0.24%)	⬇️
.../datasource/sql/exec/select_for_update_executor.go	0.00% <0.00%> (ø)
pkg/datasource/sql/parser/parser_factory.go	50.00% <0.00%> (-0.95%)	⬇️
pkg/datasource/sql/tx_at.go	23.52% <ø> (-2.19%)	⬇️
pkg/datasource/sql/types/executor.go	0.00% <0.00%> (ø)
pkg/datasource/sql/types/sql.go	0.00% <0.00%> (ø)
.../sql/undo/builder/mysql_update_undo_log_builder.go	0.00% <0.00%> (ø)
... and 9 more

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Fixes #441