Chore/compat arianna v0.2

[romainljsimon]

Files are changed to comply with the new Arianna version.
Now, each chain has its own numbered folder, where individual callbacks+ trajectories are stored.
The acceptance is not a callback anymore and the StoreAcceptance algorithm is now used. The StoreAcceptance algorithm is now parsed, when running commands from CLI.
Callbacks have changed names and are not named function callback_*.
Callback functions are not written as:

Arianna.@callback function my_callback()

[codecov]

Codecov Report

❌ Patch coverage is 12.50000% with 7 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/ParticlesMC.jl	0.00%	5 Missing ⚠️
src/molecules.jl	0.00%	2 Missing ⚠️

Files with missing lines	Coverage Δ
src/utils.jl	92.59% <100.00%> (+6.38%)	⬆️
src/molecules.jl	69.56% <0.00%> (-1.55%)	⬇️
src/ParticlesMC.jl	8.57% <0.00%> (-0.34%)	⬇️

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[leonardogalliano]

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