Support query endpoint

[AliOsm]

This PR supports the query endpoint. I tested it on one of my projects and it is working as expected.

Sample:

Qdrant::Client.new(url: 'http://localhost:6333').points.query(
  collection_name: 'test',
  prefetch: [
    {
      query: dense_vector,
      using: 'dense',
      limit: 100
    },
    {
      query: {
        indices: sparse_indices,
        values: sparse_values
      },
      using: 'sparse',
      limit: 100
    }
  ],
  query: colbert_vectors,
  using: 'colbert',
  limit: 100
)

[Copilot]

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[andreibondarev]

@AliOsm Thank you!