Add ability to access account info

[acheroncrypto]

We can access the public key of the account with .key() but not the other properties. It would be great to have access to the remaining properties.

pub struct AccountInfo<'a> {
    pub key: &'a Pubkey,
    pub is_signer: bool,
    pub is_writable: bool,
    pub lamports: Rc<RefCell<&'a mut u64>>,
    pub data: Rc<RefCell<&'a mut [u8]>>,
    pub owner: &'a Pubkey,
    pub executable: bool,
    pub rent_epoch: u64,
}  

[ameliatastic]

Looks feasible to add (at least most of) these fields! Definitely something that people are going to need to be able to access in the future, when programs start getting more complex.

[KopylovVadik]

Hello everyone, I can do this, can I know the path to the file?

[ameliatastic]

Check src/core/compile/builtin/prelude.rs, pretty much everything account-related is implemented there. I think you only need to touch that to add these features, you can read my overview here for more detail if you need!