Declare customValue type for passing an arbitrary value to touchables

[ethanshar]

WOAUILIB-1006
Today our TouchableOpacity's onPress callback support passing back the props the user pass.
This is very useful cause it helps avoid passing inline callback
So instead of doing this

<TouchableOpacity someValue={1}  onPress={(props) => doSomething(props.someValue)} />

You can do

<TouchableOpacity someValue={1}  onPress={doSomething} />
...
doSomething({someValue}) => {...}

After migrating to TS this pattern has become an issue, because when a user pass an arbitrary prop like someValue typescript throws an error.
The new customValue prop purpose is to have a dedicate prop for passing these values.