2. particles are allocated on GPU
3. GetI()/SetI() are adapted for GPU
4. added GetAllPartNumGPU(), GetNewParticleGPU(),
DeleteParticle_withoutTrajectoryTerminationGPU()r
5. modified: LapentaMultiThreadedMoverGPU(),
ExchangeParticleData(),PIC::ParticleBuffer::Init()
6. PIC::ParticleBuffer::Thread is declated _TARGET_DEVICE_
_CUDA_MANAGED_ now
7. test/srcFastWave/main.cpp: particles are initialized on GPU

test: test_fast-wave passes

commint 7a0c5c95. Here is is a correct
roll back to 7a0c5c95.

This reverts commit 7a0c5c95.
An issue was introduce in the function GetNewParticle. That is the
reason for reverting the code.

   When SamplingMode==_TEMP_DISABLED_SAMPLING_MODE_ the memory beffers
to accumulate the particle sample are still allocated because sampling
is only temporarely suppressed not completly desabled => sampling can be
executed during the run => memory need to be allocated
The mode _DISABLED_SAMPLING_MODE_ means that the sampling is completely
disables. Allocation of the memory to store sample is limited to the
very minimum

2. Added flag PIC::ParticleWeightTimeStep::GlobalTimeStepInitialized
which is set true when the value of
PIC::ParticleWeightTimeStep::GlobalTimeStep is initialied in
PIC::Init_BeforeParser() or in amps_param__interface.cpp. The flag is
needed to prevent re-initialization of
PIC::ParticleWeightTimeStep::GlobalTimeStep() when it is already
initialized in amps_param__interface.cpp

3. Command "#TIMESTEPPING" is added in the PT component section of the
PARAM.in when AMPS is executed as a component of the SWMF

2. hard-wired "60 sec" is replaced with _PIC_LOGGER_TIME_LIMIT_ as a
parameter of Debugger::logger.func_enter() calls

_PIC_LOGGER_MODE_==_PIC_MODE_ON_

_PIC_LOGGER_MODE_==_PIC_MODE_ON_

This reverts commit bb73f504.

_PIC_DYNAMIC_LOAD_BALANCING_PARTICLE_NUMBER_, particle counting has been
moved from PIC::TimeStepInternal::Sampling() to
PIC::Mover::MoveParticles() since that latter loops through all model
particles anyway.

Dynamic load balancing according to the particle number
(_PIC_DYNAMIC_LOAD_BALANCING_MODE_ ==
_PIC_DYNAMIC_LOAD_BALANCING_PARTICLE_NUMBER_) can be used when the
sampling procedure is disabled
(SamplingMode==_DISABLED_SAMPLING_MODE)

input file to disable sampling
2. splitting PIC::TimeStep() is cleaned
3. added SamplingMode _SINGLE_OUTPUT_FILE_SAMPING_MODE_ -> that enables
sampling only to output a single data file. After that, sample is again
become disabled

execution sequence of the code is more clear