feature: support semicolon as CSV separator

[disrupted]

Did you check the tree-sitter docs?

• I have read all the tree-sitter docs if it relates to using the parser

Is your feature request related to a problem? Please describe.

sometimes a CSV file uses semicolon as the separator instead of comma. Currently the parser does not detect semicolon as separator which yields an incorrect language tree

Describe the solution you'd like

parser can still construct a correct language tree

Describe alternatives you've considered

No response

Additional context

No response

[amaanq]

Seems like it depends on the OS/locale of the CSV file? If so we can't always determine what the separator should be (what if a file uses both semis and commas)?

[ObserverOfTime]

This calls for an ssv variant. :^)