tower: Figure out a good way to test tower api.

[lkorenc]

Prerequisites

• I have read the documentation and the proposed feature is not implemented.

Description

Figure out a good way to test tower api. Candidate to handle orchestration is vast-repl however then we have to figure out what is the most ergonomic way to navigate module on instruction granularity. Another option is to have some "generic" way to print the whole link and test the whole mapping.