* Add time-based derivatived (e.g. bandwidth) to some collectors
* Add documentation
* Add comments
* Fix: Only compute rates with a valid previous state
* Only compute rates with a valid previous state
* Define const values for net/dev fields
* Set default config values
* Add comments
* Refactor: Consolidate data structures
* Refactor: Consolidate data structures
* Refactor: Avoid struct deep copy
* Refactor: Avoid redundant tag maps
* Refactor: Use int64 type for absolut values
Co-authored-by: Holger Obermaier <40787752+ho-ob@users.noreply.github.com>