Move `EmbeddingBasedDocumentSplitter` to Haystack main and remove it from experimental

[sjrl]

This is an internal request from Sol for one of our clients.

Steps for Moving an Experiment to Haystack Core or Integrations

• Make sure the latest Haystack release or an integration release contains the merged experiment
• Update import statements in example cookbook, remove experimental tag from cookbook, etc.
• Close discussion in haystack-experimental with move information
• Remove pydocs
• Move experiment from active experiments in the catalog in haystack-experimental README.md to adopted experiments
• Remove example notebook from haystack-experimental if it exists
• Remove dependencies needed for the experiment from pyproject.toml

[sjrl]

Hey @davidsbatista I think we should re-open this and close once the full check list is finished

[davidsbatista]

waiting for the new haystack to release to be removed from experimental which is also parte of this issue