feat: add support for Meta LLMs in AWS Bedrock (#960)

apps/docs/docs/modules/llms/available_llms/bedrock.md

packages/community/README.md

packages/community/src/llm/bedrock/base.ts

packages/community/src/llm/bedrock/provider.ts

packages/community/src/llm/bedrock/providers/anthropic.ts

packages/community/src/llm/bedrock/providers/index.ts

packages/community/src/llm/bedrock/providers/meta.ts

packages/community/src/llm/bedrock/types.ts

packages/community/src/llm/bedrock/utils.ts