[EPIC] Update all APIs to return attributes / properties in camelCase notation

Parent: [EPIC] Future-proof AURA API (#192)

Currently there is a mixture of CamelCase, snake_case and header-case. As part of AEP05 we want to unify the naming scheme.

Sub Tasks

• Steering API: steering#152 (closed)
• Tank API: tank#50 (closed)
• Tank Cut & Glue API: tank-cut-glue#25 (closed)
• Dashboard: dashboard#164 (closed)
• Dashboard Clock: dashboard-clock#22 (closed)
• Engine: engine#126 (closed)
• Engine API: engine-api#38 (closed)
• Engine Core: engine-core#49 (closed)