[SLS-34] Implemented configuration utility class based on Typesafe Config

[svariant]

List of Changes

• Defined an utility class LollipopTypesafeConfig in the core module that implements Lightbend's Config library in the core module
• Defined a sample that uses the class as configuration
• Updated the general README

Motivation and Context

Issue SLS-34

How Has This Been Tested?

A sample that uses the configuration class has been created and tested

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as
  expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[github-actions]

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Total Project Coverage	90.9%	🍏

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
18 Code Smells

No Coverage information
0.0% Duplication