[OmniBridge]: Clarify accounts field

[frolvanya]

omni-bridge/near/omni-types/src/locker_args.rs

Line 10 in 1b88b4e

pub accounts: Vec<(AccountId, bool)>,

omni-bridge/omni-relayer/src/startup/eth.rs

Lines 256 to 264 in 1b88b4e

	// If storage is sufficient, then flag should be false, otherwise true
	let sender_is_storage_deposit =
	!utils::storage::is_storage_sufficient(jsonrpc_client, &token, &sender)
	.await
	.unwrap_or_default();
	let recipient_is_storage_deposit =
	!utils::storage::is_storage_sufficient(jsonrpc_client, &token, &recipient)
	.await
	.unwrap_or_default();

This is confusing, it's better to introduce enum for this