feat(opensearch serverless): analyzer

[statefb]

close #536

Add analyzers support for the construct: https://opensearch.org/docs/latest/analyzers/

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[statefb]

example usage:

import { bedrock } from "@cdklabs/generative-ai-cdk-constructs";
import {
  CharacterFilterType,
  TokenFilterType,
  TokenizerType,
} from "@cdklabs/generative-ai-cdk-constructs/lib/cdk-lib/opensearchserverless";

const kb = new bedrock.KnowledgeBase(this, "KB", {
    embeddingsModel: bedrock.BedrockFoundationModel.TITAN_EMBED_TEXT_V1,
    instruction:
      "Use this knowledge base to answer questions. Please quote the reference to explain your answers.",
    analyzer: {
      characterFilters: [CharacterFilterType.ICU_NORMALIZER],
      tokenizer: TokenizerType.KUROMOJI_TOKENIZER,
      tokenFilters: [
        TokenFilterType.KUROMOJI_BASEFORM,
        TokenFilterType.JA_STOP,
      ],
    }
)

[krokoko]

Also, could you please update the code snippet here: https://github.com/awslabs/generative-ai-cdk-constructs/blob/main/src/cdk-lib/opensearch-vectorindex/README.md#vector-index with the new analyzer props

[krokoko]

Build is not passing: https://github.com/awslabs/generative-ai-cdk-constructs/actions/runs/9752808672/job/26916988890?pr=537

[krokoko]

Build is not passing: https://github.com/awslabs/generative-ai-cdk-constructs/actions/runs/9752808672/job/26916988890?pr=537

fixed

[krokoko]

Great thank you for your contribution @statefb ! I approved, once a second reviewer will approve we will merge

[dineshSajwan]

LGTM