refactor: convert imapResponseParserException class from java to kotlin

package com.fsck.k9.mail.store.imap;

package com.fsck.k9.mail.store.imap

public class ImapResponseParserException extends RuntimeException {

    public ImapResponseParserException(String message) {

        super(message);

    }

    public ImapResponseParserException(String message, Throwable cause) {

        super(message, cause);

    }

}

class ImapResponseParserException @JvmOverloads constructor(

    override val message: String? = null,

    override val cause: Throwable? = null,

) : RuntimeException(message, cause)