Update binomial sampling

[jnsiemer]

Description

This PR updates...

• binomial sampling similar to uniform and discrete Gaussian sampling by introducing a BinomialSampler, which can be used to sample multiple samples more efficiently. This seems to speed up the sampling process by a factor of 2.

Testing
All tests already existed. I just updated them.

Checklist:

• I have performed a self-review of my own code
  • The code provides good readability and maintainability s.t. it fulfills best practices like talking code, modularity, ...
    • The chosen implementation is not more complex than it has to be
  • My code should work as intended and no side effects occur (e.g. memory leaks)
  • The doc comments fit our style guide