[DOC] Refer to flow framework in different search documentation

[amitgalitz]

What do you want to do?

• [x] Request a change to existing documentation
• [ ] Add new documentation
• [ ] Report a technical problem with the documentation
• [ ] Other

Tell us about your request. Provide a summary of the request.

Page 1 -Neural Search: https://opensearch.org/docs/latest/search-plugins/neural-search/

• Here there exists links to all the different type of “ml” searches that we support: semantic, hybrid, multimodal, sparse, conversational.
• We want to add a bullet point that flow-framework can help simplify all these use cases

Page 2 - Semantic Search: https://opensearch.org/docs/latest/search-plugins/semantic-search/

• We can add reference to our semantic_search default use case or link to our tutorial

Page 3 - Hybrid Search: https://opensearch.org/docs/latest/search-plugins/hybrid-search/

• We can add reference to our hybrid_search default use case or link to our tutorial

Page 4 - Multimodal Search: https://opensearch.org/docs/latest/search-plugins/multimodal-search/

• We can add reference to multiple different default templates we have for multimodal search (e.g. multimodal_search_with_bedrock_titan) default use case or link to our tutorial

Page 5 - Sparse Search: https://opensearch.org/docs/latest/search-plugins/neural-sparse-search/

• We can add reference to our local_neural_sparse_search_bi_encoder default use case or link to our tutorial

Page 6 - Conversational Search: https://opensearch.org/docs/latest/search-plugins/conversational-search/

• We can add reference to our conversational_search_with_llm_deploy default use case or link to our tutorial

Page 7: Search Pipelines

• We want to add some mention of build workflows in OpenSearch flow UI editor

Version: List the OpenSearch version to which this issue applies, e.g. 2.14, 2.12--2.14, or all.

2.17 +

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.