Add Conversation AI to Java SDK

[siri-varma]

PR Overview: Conversation AI SDK Integration

This PR introduces the Conversation AI SDK with the Converse API. The implementation is structured into the following categories:

• Core Logic
• Models
• Unit Tests

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Core Logic

The core logic is implemented in a key class, as detailed below:

Class	Description	Details
DaprConversationClient	Manages the Conversation API. Handles validations and async calls.	- Calls the Conversation API asynchronously. - Validates inputs and manages job execution.

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API Contracts

The following is the method signature for the Dapr Converse API:

Dapr Converse API

This method interacts with the Dapr Converse API.

Mono<DaprConversationResponse> converse(
    String conversationComponentName,
    List<DaprConversationInput> daprConversationInputs,
    String contextId,
    boolean scrubPii,
    double temperature
);

Parameter	Description
conversationComponentName	Name of the conversation component.
daprConversationInputs	List of prompts that are part of the conversation.
contextId	Identifier for an existing chat session (e.g., similar to ChatGPT).
scrubPii	Whether to scrub personally identifiable information (PII) from responses.
temperature	Controls response randomness (lower = more predictable, higher = more creative).
Returns	DaprConversationResponse

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Models

The SDK follows the builder pattern for constructing models, ensuring cleaner and more maintainable object creation.

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Tests

The testing strategy includes:

• Unit Tests: Validate individual components and business logic.

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Issue Reference

We ensure that all PRs are linked to a relevant issue where the problem or feature has been discussed before implementation.

This PR closes the following issue: #1101

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Checklist ✅

Please confirm the following before merging:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

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[siri-varma]

@salaboy, @artur-ciocanu please let me know what you think. Working on integration and unit tests in the meanwhile

[yaron2]

Great contribution, thanks @siri-varma

[salaboy]

this is great @siri-varma ! I will start reviewing soon!

[siri-varma]

For integration tests, we must spin up a mock for third party LLM endpoint. Do we have similar patterns in the current setup? (where dapr is talking to a third party api and receiving responses)