[REQ] Allow to override LogLevel of a LogId

[mhatzl]

Describe your feature request

Using derive macros like ErrLogId allow to use enums, structs, and unions as LogIds.
With these macros, the LogLevel is set automatically and cannot be changed.
However, sometimes the context defines if a LogId should be treated for example as error or warning.

Example:

Setting a strict flag for compilers might treat warnings as errors.