[AWS::Macie::ClassificationJob] - [Coverage] - New resource type request

### Name of the resource

Other

### Resource name

AWS::Macie::ClassificationJob

### Description

The Amazon Macie API supports creating and managing classification jobs via [CreateClassificationJob](https://docs.aws.amazon.com/macie/latest/APIReference/jobs.html#jobs-method-post) (`POST /jobs`) and [UpdateClassificationJob](https://docs.aws.amazon.com/macie/latest/APIReference/jobs-jobid.html#jobs-jobid-method-patch) (`PATCH /jobs/{jobId}`), but CloudFormation has no `AWS::Macie::ClassificationJob` resource type.

The existing Macie resources in CloudFormation only cover `AWS::Macie::Session`, `AWS::Macie::AllowList`, `AWS::Macie::CustomDataIdentifier`, and `AWS::Macie::FindingsFilter`. Classification jobs — arguably the primary operational primitive of Macie — are missing from the CloudFormation resource specification.

This request falls under category **(b) new resource type for an existing service is desired**.

#### Suggested key properties (mirroring the CreateClassificationJob request body)

- `Name` (required)
- `JobType` (`ONE_TIME` | `SCHEDULED`)
- `ScheduleFrequency` (`DailySchedule` | `WeeklySchedule` | `MonthlySchedule`)
- `S3JobDefinition` (bucket/object scoping — `BucketDefinitions` or `BucketCriteria`, plus `Scoping`)
- `SamplingPercentage`
- `InitialRun`
- `ManagedDataIdentifierSelector` (`ALL` | `EXCLUDE` | `INCLUDE` | `RECOMMENDED` | `NONE`)
- `ManagedDataIdentifierIds`
- `CustomDataIdentifierIds`
- `AllowListIds`
- `Description`
- `Tags`

#### Why this matters

Without a native resource type, consumers must implement classification jobs via a CloudFormation Custom Resource (e.g. CDK's `AwsCustomResource`) that calls the Macie2 SDK directly. This workaround loses CloudFormation benefits like drift detection, resource import, native update/rollback semantics, and clean lifecycle management.

Start by reviewing the linked Macie CreateClassificationJob and UpdateClassificationJob API operations, then compare them with the existing AWS::Macie::Session, AllowList, CustomDataIdentifier, and FindingsFilter resources. Done means CloudFormation supports an AWS::Macie::ClassificationJob resource with the requested job, scope, identifier, schedule, and tagging properties and native lifecycle behavior.

Written by the indexing model from the issue text.