[4.11.x] Template configs to support web portal securing

[HeshanSudarshana]

Purpose

Related issues: https://github.com/wso2/product-apim/issues/11567, https://github.com/wso2/product-apim/issues/11889

This PR adds the following tomcat configurations.

1. Add below config to deployment.toml in order to control access to the all web applications via the allowed IP list only.

[web_app.control_access]
enable = true
allow =  ["IP1", "IP2", "IP3"]

2. Add below config to deployment.toml in order to configure a custom Tomcat listener.

[web_app.listener]
class_name = ["class1", "class2"]