Docs guide: Update UI reference screenshots

[camundom]

Description

Update UI screenshots in the 'Get Started' guide to match the latest 8.3 version of the product.
This replaces all image references of the old UI, as defined in the list below.

Related to #2741

Screenshots to be updated

Create an account

• Sign-up
• Login
• Console home

Model your first process

• Blank project
• Simple task creation
• Share link

Get started with human task orchestration

• Expression input example
• Form values example

Getting started with API orchestration

• Connectors blank task
• Connectors REST red properties
• Microservice orchestration config service task
• Microservice orchestration service task

Set up client connection credentials

• Cluster detail clients
• Cluster details create client
• Cluster details created client

Automate a process using BPMN

• Bake cake bpmn
• Complete baking cake bpmn

Configure an out-of-the-box Connector

• Bpmn expense sample
• Adding connector
• Connector properties panel
• Connectors bpmn diagram
• Operate example

Create decision tables using DMN

• DMN model example
• DMN table example

Build forms with Modeler

• Form email example
• Form palette
• Form properties email

Improve processes with Optimize

• Dashboard
• Heatmap
• Analysis