[WIP] Add runtime option to print out data on the memory usage for each species each time step.

[atmyers]

Requires AMReX PR 2949: AMReX-Codes/amrex#2949

• AMReX/PICSAR: Weekly Update #3412
• write this in a table/file for easier processing

Sample output:

STEP 20 starts ...
Memory usage data for species electrons_h:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 311874496 (4873039), Max: 312337728 (4880277), Total: 1248577984 (19509031)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 340157312, Max: 340157312, Total: 1360629248]

Memory usage data for species electrons_c:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 874304320 (13661005), Max: 875307328 (13676677), Total: 3498921280 (54670645)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 1148030976, Max: 1148030976, Total: 4592123904]

Memory usage data for species electrons_n:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 252427200 (3944175), Max: 252742336 (3949099), Total: 1010237952 (15784968)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 340157312, Max: 340157312, Total: 1360629248]

Memory usage data for species hydrogen:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 432537600 (4915200), Max: 432537600 (4915200), Total: 1730150400 (19660800)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 467716304, Max: 467716304, Total: 1870865216]

Memory usage data for species carbon:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 226099200 (2457600), Max: 226099200 (2457600), Total: 904396800 (9830400)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 324186776, Max: 324186776, Total: 1296747104]

Memory usage data for species nitrogen:
Required to store particles:
ParticleContainer spread across MPI nodes - bytes (num particles): [Min: 55771136 (606208), Max: 55771136 (606208), Total: 223084544 (2424832)]
Actual vector capacity:
ParticleContainer spread across MPI nodes - bytes: [Min: 64036884, Max: 64036884, Total: 256147536]

Total bytes across all species required to store particles:
[Min: 2153013952, Max: 2154795328, Total: 8615368960]
Actual vector capacity (bytes):
[Min: 2684285564, Max: 2684285564, Total: 10737142256]

[ax3l]

@atmyers please feel free to update the PR with development via rebase or merge on Monday :)

[ax3l]

Discussed today: let's write this in a table/file for easier processing.