Update the Github App events and permissions

Description of problem:

Setting up Github App from the console is lacking the required permission 
Events and Permissions: https://pipelinesascode.com/docs/install/github_apps/

Version-Release number of selected component (if applicable):
4.12

How reproducible:
Always

Steps to Reproduce:

1. Setup Github App from administrator perspective.
2. Create Repository and configure it to use the Github App method.

Actual results:
Creates Github App with limited permission.

Expected results:
Created Github App should contain all the required permission and should trigger the pipelinerun successfully on git events.

Additional info:

Console needs to update the default_events and default_permissions here it has to be matching with the CLI - refer this.

we need to update the  See Github permission section in the UI as well.