Recipe to prefer `Collection.contains` over multiple OR-ed comparisons

What problem are you trying to solve?

Make code more readable.

Describe the situation before applying the recipe

Example

public boolean isWeekend(String day) {
    return "Saturday".equals(day) || "Sunday".equals(day);
}

Describe the situation after applying the recipe

public boolean isWeekend(String day) {
    return Set.of("Saturday", "Sunday").contains(day);
}

Context

Here the target code is not perfect either. Ideally one would delegate to #617 after this recipe.

The issue does not name implementation files, tests, or an entry point. Locate the existing recipe definitions and test patterns first, then verify that repeated OR-ed string comparisons are rewritten to Set.of(...).contains(day) and consider how this should interact with recipe #617.