add solang milestone 2

[salaheldinsoliman]

Milestone Delivery Checklist

• The milestone-delivery-template.md has been copied and updated.
• The invoice form 📝 has been filled out for this milestone.
• This pull request is being made by the same account as the accepted application.
• I have disclosed any and all sources of reused code in the submitted repositories and have done my due diligence to meet its license requirements.
• In case of acceptance, the payment will be transferred to the BTC/ETH/fiat account provided in the application.
• The delivery is according to the Guidelines for Milestone Deliverables.

Link to the application pull request: w3f/Grants-Program@eba3474

[dsm-w3f]

@salaheldinsoliman thank you for the milestone delivery and thanks @stojanov-igor for the external evaluation. Please consider the comments included in the external evaluation and also this one. Let me know when I can continue this evaluation.

[salaheldinsoliman]

@dsm-w3f @stojanov-igor
Thanks for your feedback!
I see the two main points concerning are as follows:
1- cargo test fails:
You could fix this by cloning the submodules, please run git submodule update --init --recursive and then retry cargo test and it should work.

2- you can't see a difference with verbose flag.
You're correct. I handled this issue in this PR: hyperledger-solang/solang#1441.

3- For the test coverage, the maintainers do not have cargo tarpaulin in the CI tests. Anyways, I will suggest it to them but I think this is a different issue.

@dsm-w3f you can continue with the evaluation I think

[dsm-w3f]

@salaheldinsoliman thank you for the answers and fixes. The remainder problems were fix. The milestone is approved. I'll forward your invoice internally and the payment should take place within two weeks. Great Job!