TRAM Progress bar handling

[MaaikeG]

Thanks for submitting a PR, your contribution is really appreciated!

Here's a quick checklist that should be present in PRs:

• Make sure to include one or more tests for your change
• Add yourself to AUTHORS
• Add a new entry to the doc/source/CHANGELOG. Decide whether your change is a fix or a new feature.

[MaaikeG]

The notebook also needs to be updated but I will do that when I have also moved the log likelihood stuff

[codecov]

Codecov Report

Merging #191 (f6d137f) into main (3d59ee1) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #191   +/-   ##
=======================================
  Coverage   93.55%   93.55%           
=======================================
  Files         131      131           
  Lines       10467    10467           
=======================================
  Hits         9792     9792           
  Misses        675      675           

Impacted Files	Coverage Δ
deeptime/markov/msm/tram/_tram.py	95.94% <100.00%> (ø)
deeptime/markov/msm/tram/_tram_dataset.py	97.07% <100.00%> (ø)
deeptime/util/callbacks.py	100.00% <100.00%> (ø)
deeptime/util/platform.py	100.00% <100.00%> (ø)

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[clonker]

I like it, thanks!