CAPI callback error signaling

[atobiszei]

• Fix bug in async execution Additionally there are few improvements in building:
• stop recompiling whole OVMS with dependencies when enabling OV_TRACING
• further ovms_lib separation which should enhance further using bazel cache and rebuilds Eg. changing from python/mp disable to enable should affect lesser scope of compilation units which should improve bazel caching.

Ticket:CVS-141785

🧪 Checklist

• [x] Unit tests added.
• [x] The documentation updated.
• [x] Change follows security best practices.