Add caseSensitive to Table constructor to schema field names validation

[aivuk]

• fixes #185

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Base on the bug reported by @paulboony at https://github.com/frictionlessdata/tableschema-js/issues/185 I implemented the option to load a table passing an argument caseSensitive, that will make the check between the table data header names and the field names on the schema case sensitive. For now I left the default as case sensitive, because this is the current tableschema-js behavior.

You can now load a schema for a table not case sensitively as:

const table = await Table.load('data.csv', { schema: 'schema.json', caseSensitive: false })

[codecov[bot]]

Codecov Report

Merging #186 (48170d8) into main (fff9770) will increase coverage by 0.04%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #186      +/-   ##
==========================================
+ Coverage   93.16%   93.20%   +0.04%     
==========================================
  Files          35       35              
  Lines         907      913       +6     
==========================================
+ Hits          845      851       +6     
  Misses         62       62              

Impacted Files	Coverage Δ
src/table.js	94.89% <100.00%> (+0.16%)	:arrow_up:

:mega: Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[paulboony]

Thanks, @aivuk. Can you also add this new caseSensitive option to index.d.ts for typescript support, please? https://github.com/frictionlessdata/tableschema-js/blob/37f02247e0ce35f382ad815121bd64877e9718af/index.d.ts#L16

[paulboony]

@aivuk Who can review this PR to move this along?

[aivuk]

@aivuk Who can review this PR to move this along?

@roll is the one, but this week can be a bit complicate for him to do it.