CS cart addon development, do specific task after each order placed, extra store data, custom URL for specific task inside addon
<p>I am trying to develop a new add-on for cs cart.</p>

<p>I need some help for following matters:</p>

<ul>
<li><p>I want to use a hook that will run my code from my addon for my own task. I want to use a hook that will be triggered each time when a new order is placed, using either cash or paypal payment. Which hook should I use so that no order will miss this hook? I want to send order details to a third party API when order placed by customer. For cash order, instantly, and for paypal, order when IPN comes.</p></li>
<li><p>For multi store license, how can I put store specific custom settings/configuration in my addon? I mean each store will have different custom settings to identify by my addon.</p></li>
<li><p>I need a URL that will trigger/run some code from my addon that will do some db update and send notification only. How could I do that in my addon?</p></li>
</ul>

<p>Please, if anyone could help me. At least if you could give me some link of documentation or tutorial, then it will be enough because I am not seeing these things in cs cart documentation.</p>