Use maxDepth for specific connection directives in schema for Amplify Codegen

### Is this related to a new or existing Amplify category?

api

### Is this related to another service?

_No response_

### Describe the feature you'd like to request

For the generation of types one can set maxDepth for all connection directives. But on the one hand this is not necessary for all connection fields and on the other hand we need some fields to be set with more depth.

It would be great to have the option to set the maxDepth specifically for a connection field.
Other connection fields not set specifically can take the default value set in `.graphqlconfig.yml`

### Describe the solution you'd like

Option to set the maxDepth specifically for a connection field like:
```graphql
orderPositions: [OrderPosition!]! @connection(keyName: "orderPositionsByOrder", fields: ["id"], maxDepth: 6)
```
### Describe alternatives you've considered

Define custom types for each connection field.

### Additional context

_No response_

### Is this something that you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request
- [ ] ⚠️ This feature might incur a breaking change

Start by tracing how Amplify Codegen reads connection directives and the default maxDepth from .graphqlconfig.yml. Check how the example @connection field is represented during type generation, then define what should happen when a field-level maxDepth is present versus when only the global default is set.

Written by the indexing model from the issue text.