Fix/e2e test

[MSghais]

Start fix #1 WIP

• Change STWO with the main repo (Serde merged in main)
• Add workspace tests
• Test workspace with Cargo.toml

Running script CI/CD:
cargo test --package tests --lib -- e2e_test --show-output -- --no-capture

TODO:

• Fix e2e_test
• Fix or change CI/CD command maybe
• STWO main breaking changes

Issues:

1. With the fork of STWO with serde:

I encounter this error with the new tests workspace on the script:

notifications.next() is not defined now

no method named next found for struct tokio::sync::broadcast::Receiver in the current scope
private field, not a method

2. With the STWO main branch:

Layer::GrandProduct(Mle::new(SecureFieldVec {
| ^^^^^^^^^^^^^^ help: a type alias with a similar name exists: SecureField