chore(ecs): mark TaskDefinition inferenceAccelerators as deprecated (#33248)

### Issue # (if applicable)

N/A

### Reason for this change

Elastic inference is in [EOL](https://docs.aws.amazon.com/cli/latest/reference/elastic-inference/), and is no longer available. As such, these properties are being deprecated, and will eventually be removed entirely.

### Description of changes

Marked `TaskDefinitionProps.inferenceAccelerators` and `TaskDefinition.addInferenceAccelerator()` as deprecated to prevent their creation.

### Describe any new or updated permissions being added

N/A

### Description of how you validated changes

`yarn build`

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

BREAKING CHANGE: The `TaskDefinitionProps.inferenceAccelerators` attribute and `TaskDefinition.addInferenceAccelerator()` method will be marked as deprecated.

Author: Leo10Gama

packages/aws-cdk-lib/aws-ecs/lib/base/task-definition.ts

@@ -220,6 +220,7 @@ export interface TaskDefinitionProps extends CommonTaskDefinitionProps {
    * Not supported in Fargate.
    *
    * @default - No inference accelerators.
+   * @deprecated ECS TaskDefinition's inferenceAccelerator is EOL since April 2024
    */
   readonly inferenceAccelerators?: InferenceAccelerator[];
 
@@ -724,6 +725,7 @@ export class TaskDefinition extends TaskDefinitionBase {
 
   /**
    * Adds an inference accelerator to the task definition.
+   * @deprecated ECS TaskDefinition's inferenceAccelerator is EOL since April 2024
    */
   public addInferenceAccelerator(inferenceAccelerator: InferenceAccelerator) {
     if (isFargateCompatible(this.compatibility)) {