fee_adjustments: add integration testing

[gabriele-0201]

closes #173

[gabriele-0201]

Current dependencies on/for this PR:

• main
  • PR #174
  • PR #175
    • PR #176 👈
    • PR #181
      • PR #182
      • PR #183
        • PR #197
        • PR #207
          • PR #209

This stack of pull requests is managed by Graphite.

[rphmeier]

Merge activity

• Jan 18, 7:43 PM: @rphmeier started a stack merge that includes this pull request via Graphite.
• Jan 18, 7:44 PM: Graphite rebased this pull request as part of a merge.
• Jan 18, 7:45 PM: @rphmeier merged this pull request with Graphite.