in `DerivedProperty` how do we want to store processing steps

- I think it would be a list of `ProcessingStep` which would have a description or a function call and the revision and the name of the tool
- i.e., it should be flexible enough to allow for automatic capture of the steps (as in NMRium) or manual description of the steps

Start by locating the `DerivedProperty` and related type definitions in the repository, then review how processing metadata is represented elsewhere. Compare the needs for automatically captured and manually described steps before proposing a representation for `ProcessingStep`, including descriptions or function calls, revisions, and tool names.

Written by the indexing model from the issue text.