Add support for MongoDB Atlas `$search` operator

[mtrezza]

New Feature / Enhancement Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.

Current Limitation

Parse JS SDK already provides support for the MongoDB $text operator, but not the MongoDB Atlas (hosted MongoDB) specific $search operator, or Atlas Search.

Feature / Enhancement Description

Add support for the MongoDB Atlas $search operator. Note that this operator is a header operator for multiple sub-operators, such as $regex.

Example Use Case

Search with regex using MongoDB Atlas Search.

Alternatives / Workarounds

Using the MongoDB driver directly via the Parse Server database adapter.

[parse-github-assistant]

Thanks for opening this issue!

• 🎉 We are excited about your ideas for improvement!

[abdullateef97]

@mtrezza can I take a look at this issue

[mtrezza]

@abdullateef97 Sure, please go ahead.

[harshbhar0629]

Example: Search with Regex Using MongoDB Atlas Search in Parse

Example Use Case

• The main use case is when a developer needs to perform a search with regex using MongoDB Atlas Search to match patterns within the data stored in MongoDB Atlas, which would typically require the $search operator. This enhancement would allow:
• Searching for documents with field values that match a specific regex pattern.
• Using Atlas Search's advanced text indexing and search functionalities for optimized performance and ranking of results.

Proposal for Parse SDK Enhancement

• To make MongoDB Atlas $search available within Parse's aggregate() function, the following actions would be required:
• Update Parse Server to support the MongoDB $search operator within the aggregation pipeline.
• Modify Parse Query Methods to recognize and handle the $search operator and its sub-operators like $regex, $text, autocomplete, etc.
• Ensure backward compatibility so that existing code using $text searches or other MongoDB operators continues to work seamlessly.

@mtrezza Please review it once:)