Progress bar on Kaggle repo for batches + epochs

[thedavidchu]

Using tdqm. See example.

[thedavidchu]

@kanav532 if you could take over this issue. It's a pretty light issue (I estimate no more than 10 lines of code and in reality, closer to 3). E.g. (ofc not exactly this code, just a demonstration of it):

from tdqm import tdqm

for epoch in tdqm(range(num_epochs)):
    for batch in tdqm(range(num_batches)):
        pass