Function toSession

toSession(account: IAccount, card?: ProfileCard): Session
Describe an account as a session the UI can show.
Parameters
- account: IAccount
  An applesauce account.
- Optionalcard: ProfileCard
Returns Session
The session; readOnly when the account cannot sign.
Example
```
toSession(ReadonlyAccount.fromPubkey(pubkey)).readOnly; // true
```