How can I display my app as a rate provider in store settings?

I’m making an app for my shopify store, and I’m searching how to make my app display on the store settings as a rate provider but can’t find any information regarding this.

Here is a picture of where I’d like my app to show

To clarify a bit on how to get to the above and what I’m talking about.

  • Head over to Shopify Settings > Shipping & Delivery:
  • Click on Manage Rates
  • Select the appropriate Shipping Zone, click on Add Rates

Thanks in advance

The easiest way to be a carrier in a store is to be an App that installs itself as a custom carrier service. When you do that, the store (Shopify) will send every checkout payload (origin, destination, items) to your App, where you can figure out an appropriate rate and return that to the customer.

Answer gotten from here