feat: add Proxy-UUPS

[bidzyyys]

Resolves #14

Implementing StorageSlot requires our library depend directly on stylus-test feature flag to properly instantiate VM (see source code). But due to how this feature is enabled and what cargo-stylus operations depend on it, it causes great difficulty in synchronizing all of the requirements to make everything work as expected (and as before).
This it made it necessary to make some changes to make our CI pass, but it unfortunately still made export-abi not work at all.
We may find a way to address this in a maintainable way that makes export-abi work before SDK v0.10.0, but for now this will do.

PR Checklist

• Tests
• Documentation
• Changelog

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[codecov]

Codecov Report

Attention: Patch coverage is 94.09031% with 89 lines in your changes missing coverage. Please review.

Project coverage is 86.0%. Comparing base (8c720e5) to head (6341344).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
contracts/src/proxy/erc1967/utils.rs	96.2%	20 Missing ⚠️
contracts/src/proxy/beacon/proxy.rs	90.7%	19 Missing ⚠️
contracts/src/proxy/erc1967/mod.rs	89.6%	19 Missing ⚠️
contracts/src/proxy/mod.rs	89.7%	19 Missing ⚠️
contracts/src/access/ownable.rs	58.8%	7 Missing ⚠️
contracts/src/utils/address.rs	83.3%	5 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
contracts/src/access/ownable_two_step.rs	100.0% <ø> (ø)
contracts/src/finance/vesting_wallet.rs	57.2% <ø> (ø)
contracts/src/proxy/beacon/upgradeable.rs	100.0% <100.0%> (ø)
contracts/src/token/erc20/extensions/burnable.rs	100.0% <ø> (ø)
...ntracts/src/token/erc721/extensions/consecutive.rs	95.6% <ø> (ø)
contracts/src/utils/storage_slot.rs	100.0% <100.0%> (ø)
contracts/src/utils/address.rs	83.3% <83.3%> (ø)
contracts/src/access/ownable.rs	89.1% <58.8%> (-8.5%)	⬇️
contracts/src/proxy/beacon/proxy.rs	90.7% <90.7%> (ø)
contracts/src/proxy/erc1967/mod.rs	89.6% <89.6%> (ø)
... and 2 more

[bidzyyys]

Blocked by OpenZeppelin/stylus-test-helpers#104

[0xNeshi]

Blocked by OpenZeppelin/stylus-test-helpers#104

This isn't a blocker per se, we can still test proxies with e2e tests; we can even consider e2e tests to be more reliable, given how fragile proxy logic is.

[bidzyyys]

Great job @0xNeshi 👏

[qalisander]

Good job @0xNeshi !
I feel we're good to merge as it is while addressing todo's later.
Just a few notes I have

[qalisander]

I think this one should work:

    #[motsu::test]
    fn upgrade_to_and_call_with_delegate_call_failure(
        contract: Contract<TestContract>,
        implementation: Contract<Implementation>,
        alice: Address,
    ) {
        let data = function_selector!("nonExistentFunction").to_vec();

        let err = contract
            .sender(alice)
            .test_upgrade_to_and_call(
                implementation.address(),
                data.clone().into(),
            )
            .expect_err("should fail when delegate call fails");

        let vec = format!(
            "function not found for selector '{0}' and no fallback defined",
            u32::from_be_bytes(TryInto::try_into(data).unwrap())
        )
        .as_bytes()
        .to_vec();

        assert_eq!(
            err,
            Error::FailedCallWithReason(address::FailedCallWithReason {
                reason: stylus_sdk::call::Error::Revert(vec).encode().into()
            })
            .encode(),
        );
    }

And we should do it cause of this change in motsu. We replace default stylus-sdk vec![] error (when selector not found) with ours. We need to think how to change motsu to make this test look better