Add rate limits to Limio requests

Introduction to rate limiting
Rate limiting plays a crucial role in enhancing the security and efficiency of your API. By limiting the number of requests that can be made to your API within a specific timeframe, you achieve several key benefits

1. Manage and control the volume of network 

2. Acts as a defense mechanism against abusive or malicious activities.

3. By preventing excessive requests, rate limiting ensures server resources are used efficiently. 

Implementation in Limio

Limio provides the flexibility to set specific rate limits and periods for various types of requests to the Limio API, including:

1. Payment - Set limits when generating payment tokens and token endpoints for subscription management platforms like Zuora 
2. Payment Basket - Set limits when generating payment tokens for subscription management platforms like Zuora 
3. Order Requests - Set limits on functions calling APIs during order processing 

To configure these limits go to General Settings > Site Security