More progress bars

[Commaster]

So I have a 26GB .bin of results (on a ramdisk to avoid any reading bottlenecks) and call one of the memray reporters on it.
It takes literal minutes before the first processing animation appears.
Would be nice to have some idea what memray is doing in those minutes eating up 4.7GHz of compute.
Or maybe another animation placeholder "Loading your results..." which shows up immediately after validating the command line arguments.

Ideally those animations should have actual progress indication, but I understand it's not possible in some cases.

Thank you!