CDRIVER-4369 Add FLE 2 API to AutoEncryptionOpts

[kevinAlbs]

Summary

• Do not return error on "ns not found" error in drop with encryptedFields.
• Pass encrypted_fields_map to libmongocrypt.
• Add add mongoc_auto_encryption_opts_set_bypass_query_analysis.
• Require libmongocrypt version 1.5.0.
• Update csfle test dependency to 6.0.0-rc4.
• Do not spawn mongocryptd if bypass_query_analysis is true.

Background & Motivation

The "ns not found" error is returned by the "drop" command if the collection does not exist. All drivers excluding Node and C ignore this error in their drop helpers. See Do drivers ignore "ns not found" in collection drop?. Ignoring the "ns not found" error in the drop operation with encryptedFields is consistent with Node's implementation..

Using csfle version 5.3.1 resulted in the following error:

Expected success, got error "csfle "analyze_query" failed: jsonSchema is a required command field [Error 2, code 51073]"

That error suggests 5.3.1 does not have all FLE 2 features. jsonSchema is only required for FLE 1. Updating to 6.0.0-rc4 resolved this error.

[vector-of-bool]

LGTM