Add TypeScript interface for the new PipelineStage - Vector Search - solving issue #14428

[jkorach]

Summary
With MongoDB releasing the new vector search index & pipeline stage, Mongoose is missing this PiplineStage, which creates a compilation error in TypeScript. The proposal is to add support for this new PipelineStage - VecrorSearch

The motivation is to maintain & support the typesafe aggregation pipeline in Mongoose.

This PR is aiming to solve this issue

Examples

const mongoose = require("mongoose");
const contentsSchema = new mongoose.Schema({
  embedding: {
    type: [Number],
  },
  title: String,
});
export const Contents = mongoose.model(
  "Contents",
  contentsSchema,
  "contents",
);

 const result = await Contents.aggregate([
    {
      $vectorSearch: {
        index: "title_vector_index",
        path: "embedding",
        filter: {someField: "value",}
        queryVector:[0.3455,......,0.123],
        numCandidates: 200,
        limit: 10,
      },
    },
  ]);

[hasezoey]

Aside from some indentation, it looks good to me

[vkarpov15]

Thanks 👍