Add Pendo analytics tool

[ppgravitee]

Description

Pendo is a product analytics tool, it has been integrated into Cockpit and to get cross-product data we will need to integrate it on APIM (trial saas deployment too)

Technical details

Recap after discussion with mouligno ThibaudAV

Two new configuration keys should be added in gravitee.yml

• A flag to activate or deactivate the Pendo analytics service
• The key to use in Pendo analytics service

These data will be fetched by the console with the /console request sent before loading the app.

The console will have 2 implementations of a Pendo service interface:

• The one calling the real Pendo service
• A fake one, just doing nothing

Accordingly to the activation flag, either the real or the fake implementation will be instantiated.

:warning: We need to check everything is ok when navigating from AngularJS to Angular and vice versa.

[ppgravitee]

POC commit by cockpit team gravitee-io/gravitee-api-management@6a7b126