The `Object` trait is too generic and has been causing confusion. This
commit introduces `StreamStorage` as a dedicated trait for reactive
stream types.
This change involves:
- Renaming `Object` to `StreamStorage` in relevant places.
- Updating the `Value::Object` enum variant to `Value::Stream`.
- Modifying how streams are handled in the compiler, VM, and tests to
use the new `StreamStorage` trait.
- Adjusting example scripts and tests to reflect the change in type
representation.
- The `StreamNode` struct now explicitly holds its `element_type`.
Brummel
10a7fcb576