FairRoot depends on a C++11 compiler.
This is fully declared and enforced using CMake native
tooling.

CheckCXX11Features is not used at all any more.

So remove all of its usage in CMakeLists.txt.
Also remove it from the templates.

We do not need it any longer.
And we do not want to provide it to our users.
So remove it completely.

Wraps the `FairMQ::FairMQ` target to support the cleaned namespaced
FairMQ API (FairRootGroup/FairMQ#423).

Also ships transition headers
* "FairMQ.h" and
* "FairRunFairMQDevice.h".

The latter provides a transition from the `<fairmq/runFairMQDevice.h>`
to the `<fairmq/runDevice.h>` header which changed the signature and
return value of the `getDevice` function (see
FairRootGroup/FairMQ@978191f and
FairRootGroup/FairMQ@a7dbead).

Since FairMQ v1.4.0 `FairMQLogger.h` was just a wrapper around
`fairlogger/Logger.h` because all logging features have been factored out to
FairLogger already.
See https://github.com/FairRootGroup/FairMQ/blob/v1.4.0/fairmq/FairMQLogger.h

Deprecated in FairMQ v1.4.41 (FairRootGroup/FairMQ@8e6c50e)

* see FairRootGroup/FairMQ#423
* uses transition header `"FairMQ.h"` from `FairRoot::FairMQ` target
* minor cleanup of includes and typos

Uses transition header `"FairRunFairMQDevice.h"` from `FairRoot::FairMQ` target.

See FairRootGroup/FairMQ@978191f

When willingly overriding a virtual method, it is good
practice to mark the method with `override`.
Most other places already do so.

Increase the buffers to be large enough for a 32bit
integer. And switch to snprintf.