ts: Add support for unnamed(tuple) enum in accounts

[acheroncrypto]

Problem

Using unnamed(tuple) enum in accounts, e.g.

#[derive(Accounts)]
pub struct TestAccountEnum<'info> {
    pub enum_account: Account<'info, EnumAccount>,
}

#[account]
pub struct EnumAccount {
    pub data: EnumData,
}

#[derive(AnchorDeserialize, AnchorSerialize, Clone)]
pub enum TestEnum {
    Unnamed(u8),
}

results with:

Error: Tuple enum variants not yet implemented.

This is happening because passing enum arguments was implemented in #2185 but account size calculation for unnamed enums was not.

Summary of changes

• Add a test case for enum accounts(failing before this PR)
• Implement account size calculation for unnamed enums

[vercel]

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

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