Shape factor using constant memory

[AlexanderSinn]

hipace.depos_order_xy = 2
hipace.depos_derivative_type = 1

PR:

TinyProfiler total time across processes [min...avg...max]: 12.77 ... 12.77 ... 12.77

------------------------------------------------------------------------------------------------------
Name                                                   NCalls  Excl. Min  Excl. Avg  Excl. Max   Max %
------------------------------------------------------------------------------------------------------
DepositCurrent_PlasmaParticleContainer()                 1001      3.369      3.369      3.369  26.38%
AdvancePlasmaParticles()                                 1000      3.304      3.304      3.304  25.88%
ExplicitDeposition()                                     1000      3.279      3.279      3.279  25.68%
AdvanceBeamParticlesSlice()                              1000     0.2679     0.2679     0.2679   2.10%
DepositCurrentSlice_BeamParticleContainer()              2000      0.115      0.115      0.115   0.90%

Dev:

TinyProfiler total time across processes [min...avg...max]: 13.8 ... 13.8 ... 13.8

------------------------------------------------------------------------------------------------------
Name                                                   NCalls  Excl. Min  Excl. Avg  Excl. Max   Max %
------------------------------------------------------------------------------------------------------
ExplicitDeposition()                                     1000      3.708      3.708      3.708  26.87%
AdvancePlasmaParticles()                                 1000      3.697      3.697      3.697  26.79%
DepositCurrent_PlasmaParticleContainer()                 1001      3.461      3.461      3.461  25.08%
AdvanceBeamParticlesSlice()                              1000     0.3929     0.3929     0.3929   2.85%
DepositCurrentSlice_BeamParticleContainer()              2000     0.1137     0.1137     0.1137   0.82%

• Small enough (< few 100s of lines), otherwise it should probably be split into smaller PRs
• Tested (describe the tests in the PR description)
• Runs on GPU (basic: the code compiles and run well with the new module)
• Contains an automated test (checksum and/or comparison with theory)
• Documented: all elements (classes and their members, functions, namespaces, etc.) are documented
• Constified (All that can be const is const)
• Code is clean (no unwanted comments, )
• Style and code conventions are respected at the bottom of https://github.com/Hi-PACE/hipace
• Proper label and GitHub project, if applicable