FieldProp(BREAKING!): support sequence in auto-merge map keys, keyed list keys, and normal fields

[Kybxd]

• close FieldProp(sequence ): support sequence check even when parent same-key auto merge #163
• close FieldProp(sequence): extend sequence ability for normal integer field #162

❗BREAKING CHANGE

If field prop sequence is set in map field in a table sheet (Excel/CSV), it will now be generated to scalar field key's field prop of map value, but not the map field itself.

Compatibility resolution

If field prop sequence is set in map field in a table sheet (Excel/CSV), please regenerate its proto files for upgrading.
For example:

[codecov]

Codecov Report

Attention: Patch coverage is 78.50467% with 23 lines in your changes missing coverage. Please review.

Project coverage is 71.39%. Comparing base (4b09f7c) to head (94add5f).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/confgen/parser.go	82.25%	8 Missing and 3 partials ⚠️
internal/confgen/table_parser.go	73.33%	5 Missing and 3 partials ⚠️
internal/confgen/document_parser.go	66.66%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #231      +/-   ##
==========================================
+ Coverage   71.28%   71.39%   +0.10%     
==========================================
  Files          83       83              
  Lines       10342    10350       +8     
==========================================
+ Hits         7372     7389      +17     
+ Misses       2404     2394      -10     
- Partials      566      567       +1     

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