Implement logic for sending output modality and result

Implement logic for sending output modality and result

- Requirement:
MMI core module needs to send output result and modality to proper
client app and output modality provider.

- Solution:
This patch adds new logic for sending output result and modality to
client app and output modality provider. For this change, this patch
also fixes interface of output result callback of IU module.

Change-Id: Ib61141ec9c9b6b249f2836f277f81b5a12061eef
Signed-off-by: Suyeon Hwang <stom.hwang@samsung.com>