Adding examples/dev_sandbox/prof.py

[xaviernogueira]

I am merging this before my other changes to allow any changes I make to be compared (in regards to performance) to our main branch.

I added examples/dev_sandbox/prof.py which runs TSM over N iterations in a loop, and prints out total time as well as time per iteration. N is 100 by default. You can use a command line argument to change the number of iterations (10 iterations ran below):

(clearwater_env) examples/dev_sandbox: python prof.py 10

This can be used with cProfile to make a profile_out.prof file, which can be visualized via snakeviz as follows:

# runs the code for 10 iterations and records the performance profiling
(clearwater_env) examples/dev_sandbox: python -m cProfile -o profile_out.prof prof.py 10

# opens a browser window to explore the performance
(clearwater_env) examples/dev_sandbox: profile_out.prof

Quickly going to merge in so I can test some things out. This does not close any issues.