Add support for audio notes

Add support for audio notes

## Expected Behavior

The user can add audio notes

## Current Behavior

There are only text notes as of now

## Possible Solution

There can be a different button to add audio notes

## Context

This is just an enhancement

## Your Environment

* Version used:
* Environment name and version (e.g. Chrome 39, node.js 5.4):
* Operating System and version (desktop or mobile):
* Link to your project:

No files, tests, or entry points are named. Start by locating the existing text-note creation flow and the app's mobile audio capabilities, then define how audio notes are recorded and stored; done means a user can add and retrieve an audio note through the proposed control.

Written by the indexing model from the issue text.