Added ios_deeplinks_entitlement hook

[AlvYuste]

Added hook to work with ionic-plugin-deeplinks in iOS. It adds the associated domain specified to the plugin.

For instance, having:

<plugin name="ionic-plugin-deeplinks" spec="^1.0.15">
    <variable name="URL_SCHEME" value="mycustomschema" />
    <variable name="DEEPLINK_SCHEME" value="https" />
    <variable name="DEEPLINK_HOST" value="mycustomdomain.com" />
</plugin>

If you include the hook:

<platform name="ios">
    <hook type="after_prepare" src="package-hooks/ios_deeplinks_entitlement.js" />
    ...
</platform>

The XCode project will have the domain applinks:mycustomdomain.com associated.

This solves

• Question: Deeplink in iOS works ok when running from XCode but not from Ionic CLI ionic-plugin-deeplinks#97
• Deeplinks not working on iOS when using Ionic cloud build ionic-plugin-deeplinks#121
• Added a PR to solve deeplinks plugin error on cloud builds #42

Looking forward to a review @dwieeb.

Credits for @lpg-mac:
https://gist.github.com/lpg-mac/02abd3a77f1c880e8f9d59af4423c5af

Thanks!

[mlynch]

Hey all, just wanted to share some changes that are happening with the need for this. The new Ionic Pro Package feature doesn't require hooks to be added in here. Just install the plugin, and if there are hooks, they will Just Work.

As such, I probably won't merge this just to avoid any issues with current Cloud Package. I strongly suggest taking a look at Pro which is where Ionic is going and the package service for Pro is a lot better and improving rapidly. Here's a guide on migrating over:

http://ionicframework.com/docs/pro/migration/package.html