Actually I am using one plugin for loading API SDKs. This will be a Central Plugin. This plugin will contain all the property value like API-Keys and such to be entered by the user. Then the other plugins are named according to the Payment API I am using (for e.g.- Stripe).
The First Plugin will also allow the data to be saved on a database easily and manage users.
So instead of using the same code for the database again and again in each of the plugins I want to make this Central Plugin, that will have function and properties that any of the other plugins can call or use.