[REQ] Custom Extension for primitive List

I have a use case where I want to generate custom annotations for a List of primitive List like the example I have described.

This sample code spec should generate a Java code like below

`{
  "type": "object",
  "properties": {
    "card_numbers": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      }
    }
  }
}`

Java code:

`public List<@Min(1) String> getItems() {
    return items;
  }`

I would like to add a custom validation for the values inside the annotation. like this

`{
  "type": "object",
  "properties": {
    "card_numbers": {
      "type": "array",
      "items": {
        "type": "string",
        "cutomValidation": 1
      }
    }
  }
}`

Java code:

`public List<@CutomValidation(1) String> getItems() {
    return items;
  }`

I can see the annotations for primitives are supported like this for the List of primitives from this change PR:17165 but the extension is not allowed for customization.

Describe the solution you'd like

If the primitive List model is been driven through mustache files like for other fields customisation is possible.

Describe alternatives you've considered

NA

Additional context

NA

Review change PR #17165 and trace how primitive List annotations are generated. Determine where custom extensions would need to flow through the generator, then verify that the requested extension produces the custom annotation on the primitive element and preserves existing primitive-list behavior.