Task: Add AmazonGreengrassV2Client configurations to interact with AWS IoT Greengrass services

[hocinehacherouf]

Is your feature request related to a problem? Please describe.
IoT Hub Portal must be able to interact with AWS IoT Greengrass services.

Describe the solution you'd like

• Install the nuget package AWSSDK.GreengrassV2 on backend
• Create a new singleton of AmazonGreengrassV2Client.

Suggestion:

// Get AWS infos from configuration
var accessKey = "changeme";
var secretAccessKey = "changeme";
var region = "changeme";

_ = services.AddSingleton(new AmazonGreengrassV2Client(accessKey, secretAccessKey, RegionEndpoint.GetBySystemName(region)));