Middleware of `conversate`

[kakasoo]

We want to support middleware that wraps the entire process from the user's utterance to the agent's response when calling conversate. For a brief explanation, refer to Issue #53.

[kakasoo]

export class Agentica {
  ...
  private readonly middlewares_: Map<string, Set<Function>>;
  ...
  publiuc use(middleware: Function) {
     __map_take(this.middlewares_, type, () => new Set()).add(middleware);
  }

  public async conversate(content: string): Promise<IAgenticaPrompt[]> {
    ...(omission)
    await asyncMap(this.middlewares_);
    ...(omission)
  }
}

@sunrabbit123 how do you think this pseudocode?

[sunrabbit123]

what isasyncMap?
i recommend compose function
the way for easy is to use reduceRight function

[kakasoo]

interface IMiddleware {
  select?(ctx): Promise<IAgenticaPrompt[]>;
  describe?(ctx): Promise<Agentica...>;
  on(type: string, ...): Promise<void>;
}

use((ctx: {}) => new VectorStoreSelector(ctx));

Pseudocode.
We decide not to use positional parameters. Use only single parameter ( as object ).