feat(NODE-6584)!: improve typing for files in AutoEncryptionOptions

[addaleax]

Description

What is changing?

Is there new documentation needed for these changes?

What is the motivation for this change?

Release Highlight

Auto encryption options now include default filenames in TS

A common source of confusion for people configuring auto encryption is where to specify the path to mongocryptd and where to specify the path to crypt_shared. We've now made this clearer in our Typescript users. Typescript now reports errors if the specified filename doesn't match the default name of the file. Some examples:

var path: AutoEncryptionOptions['extraOptions']['mongocryptdSpawnPath'] = 'some path'; // ERROR
var path: AutoEncryptionOptions['extraOptions']['mongocryptdSpawnPath'] = 'mongocryptd'; // OK
var path: AutoEncryptionOptions['extraOptions']['mongocryptdSpawnPath'] = '/usr/local/bin/mongocryptd'; // OK
var path: AutoEncryptionOptions['extraOptions']['mongocryptdSpawnPath'] = 'mongocryptd.exe'; // OK

var path: AutoEncryptionOptions['extraOptions']['cryptSharedLibPath'] = 'some path'; // ERROR
var path: AutoEncryptionOptions['extraOptions']['cryptSharedLibPath'] = 'mongo_crypt_v1.so'; // OK
var path: AutoEncryptionOptions['extraOptions']['cryptSharedLibPath'] = 'mongo_crypt_v1.dll'; // OK
var path: AutoEncryptionOptions['extraOptions']['cryptSharedLibPath'] = 'mongo_crypt_v1.dlyib'; // OK

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket