fix: properly parse text starting with a number

[flexagoon]

Supersedes #10

Also adds tests

[flexagoon]

cc @clason

[flexagoon]

Since the logic is shared between all grammars except for the separator character, most of the tests only test csv parsing, with two extra tests at the end to test different separators

[clason]

You need to regenerate all three grammars since they all import the changed file (weird that CI didn't pick up on this.)

[clason]

Can you remove this line (as a separate commit)?

[flexagoon]

@clason seems from the CI error like the package-lock has to be removed from gitignore?

[clason]

God, I hate those *#/&%! bindings.

[clason]

Please rebase on master and try again.

[clason]

Can you squash your commits into:

1. fix: update tree-sitter version
2. add tests
3. the actual fix (squashing the chores into this)

[flexagoon]

@clason done