fix: don't suppress the names of resource types when printing terms

[vekatze]

This PR replaces <resource> with the name of a resource type when printing terms.

---

Consider the following program:

resource some-type {..}

define make(): some-type {..}

define main(): unit {
  let x: binary = make() in
  Unit
}

The output of neut check before the fix is:

Expected:
  <resource>
Found:
  some-type

The output of neut check after the fix is:

Expected:
  binary
Found:
  some-type