Recipe to replace trivial if statements with ternary operator

What problem are you trying to solve?

Code readability. Funnily, this is opposite of #50. Have a recipe to convert if-else statements to a ternary (Elvis) operator when applicable.

In specific cases the ternary operator is more readable than a verbose if-else. I think we might want to apply some heuristics on the condition being simple and/or the values assigned/returned being simple.

Describe the situation before applying the recipe

        if (age >= 18) {
            category = "Adult";
        } else {
            category = "Minor";
        }

Describe the situation after applying the recipe

        category = (age >= 18) ? "Adult" : "Minor";

Start by reviewing the existing static-analysis recipes in this repository to find the recipe and test conventions for Java transformations. Define the applicable condition and expression simplicity cases from the issue before implementing the conversion, then add coverage demonstrating the requested before-and-after behavior and run the relevant recipe tests.