[API] add settings that allow to select JSON serialization (indented or not)

[samatstariongroup]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of the SysML2.NET
• I have searched open and closed issues to ensure it has not already been reported

Description

Add a settings class that supports setting whether the JSON response shall be indented or not

Steps to Reproduce

NA

System Configuration

• SysML2.NET version:
  • SysML2.NET: 0.11.0