[feature request] generate contract ABI on contract compilation

[RoyTimes]

I noticed that there is no contract ABI generator for the SDKs. If this is an intentional decision, I wonder why.

If not, I guess the following high-level structure would be helpful for developers, just a very rough draft:

 chain metadata version: version string
 source: 

 { hash: a chain storage key? - where the wasm blob is stored compiler info.... sdk info... } 

contract: {
 name/account: contract name/contract account id(xxx.near)?
 version: contract version
 author: 

 {Alice <[email protected]>} 

}
 func: {
 "method selector like 0x17ff6720" : 

 { mutate states? or view func, constructor? bool, payables? bool, name? for SDKs/clients, // now on func parameters & return types args w/borsh types, returnType?, } 

}
 storage: {} // maybe it's a good idea to give info on storage items in the contract 
 types: {} // if the contract has some customized types 
 // - define how they are supposed to be serialize or deserialize with borsh 

[bowenwang1996]

Feel free to read about the history here near/NEPs#3

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