bug: caller-utils needs to be copied into /tests cargo.toml since they depend on it (maybe?) #330

Describe the bug
I manually entered caller-utils import in the /tests on #320 Cargo.toml: I think it should be populated automatically (since tests depend on caller-utils to work).

Expected behavior

[dependencies.caller-utils]
path = "../../../target/caller-utils"

should be copied into 'test/package-test/package-test/Cargo.toml

Additional context
Add any other context about the problem here.