Linter rule to report unnecessary disable-next-line

**Is your feature request related to a problem? Please describe.**
With time some `disable-next-line` pragmas may get stale.

**Describe the solution you'd like**
Add a linter rule that would report useless `disable-next-line` pragmas.

This should issue a warning/error (the pragma suppression would be needed if there's no reference to `foo` in `output`):

```bicep
#disable-next-line no-unused-existing-resources
resource foo 'Microsoft.KeyVault/vaults@2022-07-01' existing = {
name: 'foo'
}

output bar string = foo.apiVersion
```

The issue names no files, tests, or entry points. Start by locating the linter and disable-next-line handling, then define the rule so it reports a useless suppression while retaining suppressions needed for diagnostics, including the provided Bicep example.

Written by the indexing model from the issue text.