Add ADIOS2 sample (#14)
Add ADIOS2 sample (#14)

* Add ADIOS2 sample

Created with PIConGPU / LaserWakefield simulation with parameters:
mpirun -n 2 picongpu -s 550 -d 1 2 1 -g 56 56 28 --openPMD.period 50
--openPMD.file stream --openPMD.infix NULL --openPMD.ext bp
--openPMD.json '{   "adios2": {     "engine":
{       "usesteps": true,       "type":
"bp4",       "parameters": {         "InitialBufferSize": "2Gb",
"Profile": "On"       }     },     "dataset": {       "operators": [
]     }   } } ' --versionOnce --checkpoint.backend openPMD
--checkpoint.period 500 --checkpoint.restart
--checkpoint.restart.backend openPMD

* Write PIC sample with a 2x4x2 domain decomposition

Also deactivate node aggregation

* Rename: Remove note of LaserWakefield simulation from name

* Rename example-picongpu -> example-3d-bp4
openPMD/openPMD-example-datasets