[new rule]: check orphan definition/parameter

### Lint rule description

If a definition or a parameter is never used in any operation, there should be an error.

### Related swagger example

`TunnelConnectionStatus` in `network` API is never used: https://github.com/Azure/azure-rest-api-specs/blob/62f25f0db93c098813004f447b5afe9399c82ad1/specification/network/resource-manager/Microsoft.Network/stable/2021-05-01/virtualWan.json#L7162

### Category

ARM

### Severity level

Error

### Applies to

Management plane API spec, Data plane API spec

### How to fix the violation

Remove the orphan definition/parameter

### What't the impact if breaking the rule

Orphan definition/parameter could result in orphan class in the generated SDK codes.