Port over HTMLHeaderTextSplitter, HTMLSectionSplitter, and HTMLSemanticPreservingSplitter from the Python lib

[BenJackGill]

Checked

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Feature request

I would like to have these Python based text splitters added to the JS lib:

• HTMLHeaderTextSplitter
• HTMLSectionSplitter
• HTMLSemanticPreservingSplitter

Motivation

Splitting a HTML page correctly is very difficult task.

We can try to create a custom setup but its very hard to recreate.

It would be amazing to have these python HTML splitters ported over to the js lib.

Proposal (If applicable)

No response