Add session 04 folder and dict_set file for task 1
Create dictionary, delete cake entry  from dictionary, and check status of keys and values
Add dictionary zip to combine number range with hexadecimal range
Add copy of dictionary1, but replace values with count of a in orginal values
Add set creation function that finds the divisor of the inputs and sets divisible by 2, 3, and 4
Add two sets and display the union of insection of the two