Addition of "Regex Splitter" for Text Chunking in Dify

[jp-sft]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Yes, I am facing challenges in chunking some of my complex documents in Dify. Currently, I have to use external tools to do this, which makes my workflow less efficient.

2. Additional context or comments

I would like to see an additional tab for a "regex splitter" when adding a document in Dify. This would allow me to use regular expressions for text chunking, offering greater flexibility in the chunking process.

3. Can you help us with this feature?

• I am interested in contributing to this feature.