Feature request: Reversed list of dependencies based on git diff

**Is your feature request related to a problem? Please describe.**
Calculate what module tests to run based on git diff.

**Describe the solution you'd like**
Show a tree of modules that depend on selected module/dependency.

**Alternative solution**
Run build before tests and collect what modules were not up to date.

Start by comparing the requested git-diff-based module test selection with the alternative of building first and collecting out-of-date modules. Define the reverse dependency tree and the expected module tests before implementation; the issue names no files or tests to run.

Written by the indexing model from the issue text.