arrow

GH-15060: [JS] Add LargeUtf8 type (#35780)

This pull request adds support for the LargeUTF8 type in Arrow. Now we
can create, decode, and encode these vectors. However, while the offset
vectors support 64 bit integers, note that the value buffers are limited
to a length of 32 bits meaning that LargeUTF8 vectors cannot yet be
larger than UTF8 vectors. We will see how we can address this limitation
in a follow up pull request. The issue is that JS typed arrays can be at
most 2**31-1 elements long (implementation defined). This pull request
also fixes a bug in a rounding method which prevented us from supporting
large vectors so it's already a big step forward.

Fixes #15060.
* Closes: #15060

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Co-authored-by: Kyle Barron <kylebarron2@gmail.com>