Implement `parse-dsv`

Delimiter-separated values. `@stdlib/utils/parse-dsv`.

Note that this package is not simple. The implementation should adhere as best as possible to the various CSV RFCs and pass standard CSV parsing tests.

Ideally, this implementation should be portable and/or share a code base with a streaming variant.

Start with the @stdlib/utils/parse-dsv package and review the relevant CSV RFCs and standard CSV parsing tests mentioned in the issue. Define the parser's required behavior against those tests, then consider portability and how its code could be shared with a streaming variant.

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