feat(node): redefine endpoint routes and improve decoupling

[JeremyPansier]

Checklist:

• The code follows our code conventions.
• Important principle changes have been documented in the wiki.
• The new code is covered by unit tests with assertions.
• The behaviour node and UI have been manually tested and is as expected.
• The squash commit message follows our conventions.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
7 Code Smells

84.5% Coverage
0.6% Duplication