Use newtype pattern to solve parameter mixup

## Brief feature description

One can easily mix up seconds and nanoseconds in function arguments since the underlying type is the same. This can be fixed at compile time by using the newtype pattern and create two distinct non convertable types with the same properties as before.

Extracted from: #1196

- [ ] In duration with seconds and nanoseconds
- [ ] In SharedChunk while comparing raw pointers

Start by locating the duration code that accepts seconds and nanoseconds, then find SharedChunk comparisons involving raw pointers. Review how those arguments and comparisons are currently typed. Done means the two duration units and pointer-related values use distinct non-convertible types while retaining their existing properties.

Written by the indexing model from the issue text.