New Check: Property using `StateFunc` inside `TypeSet`

[magodo]

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Description

There is an issue hashicorp/terraform-plugin-sdk#160 stating that there will problematic if there is at least one nested property inside a TypeSet has StateFunc defined.

New or Affected Checks(s)

• S038

Flagged Provider Code

&schema.Schema{
    Type: schema.TypeSet,
    Elem: &schema.Resource {
        Schema: map[string]*schema.Schema {
            "foo": { StateFunc: f},
        },
    },
}

Passing Provider Code

&schema.Schema{
    Type: schema.TypeSet,
    Elem: &schema.Resource {
        Schema: map[string]*schema.Schema {},
    },
}

References

hashicorp/terraform-plugin-sdk#160