* Use CID values for tetraplets and `canon` vectors.
* Rename `cid_store` to `value_store`
It is consistent with the new `tetraplet_store` and `canon_store`
fields.
* Make canon data more typeful
The `CanonResult` doesn't take a JSON value anymore that is further
deserialized elsewhere, but is a struct that has all data deserialized.
* Typeful `CID` type
The `CID` type has a phantom type paramter defining its value's type.
* Group cid stores and trackers
Group cid stores into `CidInfo` struct, and trackers into `ExecutionCidState` struct.
This PR intended to reduce stream usage scope in order to make AquaVM truly deterministic.
Refs: #297.
Co-authored-by: Ivan Boldyrev <ivan@fluence.one>
Co-authored-by: Anatoly Laskaris <github_me@nahsi.dev>
feat(execution-engine): change behaviour of fold over streams
Change behaviour of fold over streams to make it more similar to pi-calculus channels/names (for more info see #333).
Closes#333.
BREAKING CHANGE:
The new stream behaviour is not compatible with old one, such as
```
(fold $stream iterator
(seq
(call ...)
(next iterator)))
```
will never end after this change (for more info again see #333).
Intially, a fold instruction was designed based on idea that its iterable can't expand,
so AIR was considered as a subtree. But after introducing recursive streams in #225, it's
no more a subtree, but a subgraph.
