PUT and PATCH APIs

[bglamadrid]

PR Checklist

• [X] Read the contribution guidelines
• [X] Added a brief description of these changes to the top of the changelog
• [X] Changes in code meet test criteria (running mvn test returns exit code 0, without errors)

PR Type

• [X] Feature
• [X] Refactoring (changes that do not affect API nor functionality)

Summary

Resolve issue #232

Gives this backend the ability to perform partial and full updates, using the analogues REST API methods, PATCH and PUT, respectively.

To successfully enable such a feature, a good measure of refactoring had to be done. These changes are more thoroughly explained in the CHANGELOG.md file.

At the center of everything, method signatures from the CrudService and PatchService interfaces were altered.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

2 Bugs
0 Vulnerabilities
0 Security Hotspots
38 Code Smells

85.6% Coverage
0.0% Duplication