Feat/nft descriptor

[andreivladbrg]

Linked issues

• Closes https://github.com/sablier-labs/flow/issues/131

Changelog

• Add a dummy SablierNFTDescriptor
• Add tokenURI function in SablierFlowState
• Add Adminable contract
• Inherit Adminable in SablierFlowState
• Add nftDescriptor state variable
• Add constructor arguments
• Implement setNFTDescriptor function in SablierFlowState contract
• Test the new functions
• Update tests accordingly
• Update scripts accordingly

[andreivladbrg]

Also, tests for Adminable contract are missing. Is that intentional?

pretty much yeah, because the code is the exact code from lockup contracts

I also found that precompiles and artifacts were not updated with NFT descriptor

you are correct, i've missed this, thanks

---

pushed a new commit to address the feedback, lmk if it looks good