* added type hints and doctests to arithmetic_analysis/bisection.py
continuing in line with #2128
* modified arithmetic_analysis/bisection.py
Put back print statement at the end, replaced algorithm's print statement with an exception.
* modified arithmetic_analysis/bisection.py
Removed unnecessary type import "Optional"
* modified arithmetic_analysis/bisection.py
Replaced generic Exception with ValueError.
* modified arithmetic_analysis/bisection.py
fixed doctests
* Change some Image File names & re-code the psnr algorithm (conserving both methods). Also Added new example.
* Selected psnr method and reformat some code from arithmetic_analysis