NEP11/17 contract validator

[cschuchardt88]

closes #194

Sorry closed PR by accident #311

Also validates the manifest on deploy for NEP-11 or NEP-17. Checks the SupportedStandards

[cschuchardt88]

I need neo-blockchaintoolkit-library in this repo to complete this PR, i have to add some methods to RPC server its a custom plugin for neo-express. No one there to merge changes or anything.

[cschuchardt88]

Waiting to see what happens with neo-project/neo-devpack-dotnet#812

[roman-khimov]

Notice that tokens and properties are optional, contract can omit them. And IIUC runtime checks for divisible NFT methods are not implemented yet.

It'd also be nice to add checks for onNEPXXPayment methods.

NeoGo compiler provides manifest checks by default (requires --no-standards to disable them), but it doesn't try running the contract. Internally it's implemented in this package if you're interested: https://pkg.go.dev/github.com/nspcc-dev/[email protected]/pkg/smartcontract/manifest/standard

[cschuchardt88]

@Ashuaidehao How you run neo-express in Online mode?

[cschuchardt88]

This is an ok start for now.