[bugfix] raises NotEnoughElementsException complaining n_results is greater than total number of elements

[Satyam-79]

Description of changes

FIXES collection.query() should return all elements if n_results is greater than the total number of elements in the collection. #301

• Improvements & Bug fixes
  • added Check Number of requested results before calling knn_query.
    • n_result <= max_element
    • n_result > 0
  • collection.query() returns all elements if n_results is greater than the total number of elements in the collection.

Documentation Changes

Bugfix, no doc change required.

[swyxio]

cc @HammadB

[Satyam-79]

We need to remove the 'test_number_of_elements_validation_query' test because it has become irrelevant after resolving issue #301. @HammadB

[HammadB]

#537 addresses the bookkeeping of delete count, once we land that I can merge that in and move this forward.