Fill in the blanks to complete the $$counter$$ function. This function should count down from the $$start$$ to $$stop$$ variables when $$start$$ is bigger than $$stop$.$ Otherwise, it should count up from $$start$$ to $$stop$.$ Complete the code so that a function call like $$counter$(3,1)$ will return $$Counting down: $3,2,1$ and $$counter$(2,5)$ will return $$Counting up: $2,3,4,5.$