Add remaining accounts test

[Arrowana]

It is quite common to have to rely on remaining accounts, add basic tests/misc/programs/remaining-accounts to cover usage

[vercel]

@Arrowana is attempting to deploy a commit to the coral-xyz Team on Vercel.

A member of the Team first needs to authorize it.

[acheroncrypto]

We have some tests that use remaining_accounts but they don't use Account::try_from. Thank you for covering this case too.

[akuzni2]

Is it possible to make this compatible with a zero copy account?

for example this will not compile

use anchor_lang::prelude::*;
use anchor_spl::token::{Token, TokenAccount};

declare_id!("G1ZiJVXBjDkBY9R8UFKTS3cUC7YXjaxvu7XHMMKbBqVW");

#[program]
pub mod zero_copy_loader {
    use super::*;

    pub fn test_zero_copy_account<'c: 'info, 'info>(
        ctx: Context<'_, '_, 'c, 'info, TestZeroCopy>,
    ) -> Result<()> {

        let account_to_load = ctx.accounts.account.as_ref();
        let loader = AccountLoader::<Data>::try_from(account_to_load)?;

        Ok(())
    }
}

#[derive(Accounts)]
pub struct TestZeroCopy<'info> {
    pub account: AccountInfo<'info>, // also doesn't work when UncheckedAccount<'info> is used
}


#[account(zero_copy)]
pub struct Data {
    pub data: [u8; 32]
}

error: lifetime may not live long enough
--> programs/test_project/src/lib.rs:14:31
|
11 | ctx: Context<', ', 'c, 'info, TestZeroCopy>,
| ---
| |
| has type anchor_lang::context::Context<'_, '1, '_, '_, TestZeroCopy<'_>>
| has type anchor_lang::context::Context<'_, '_, '_, '_, TestZeroCopy<'2>>
...
14 | let account_to_load = ctx.accounts.account.as_ref();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ argument requires that '1 must outlive '2