Add rainbow text setting (#3)

src/main/java/de/shiewk/widgets/utils/WidgetUtils.java

@@ -0,0 +1,40 @@
+package de.shiewk.widgets.utils;
+
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.world.tick.TickManager;
+
+import java.util.function.BooleanSupplier;
+
+public class WidgetUtils {
+
+    public static final BooleanSupplier TRUE_SUPPLIER = () -> true;
+
+    public static double translateToWidgetSettingsValue(double value, int max){
+        return (value / max) * 100;
+    }
+
+    public static double translateToScreen(double value, int max){
+        return value / 100d * max;
+    }
+
+    public static double computeEasing(double x) {
+        return 1d - Math.pow(1d - x, 3.5d);
+    }
+
+    public static boolean isInSingleplayer(){
+        return MinecraftClient.getInstance().isInSingleplayer();
+    }
+
+    public static float getClientTickRate(){
+        float tickRate = 20f;
+        MinecraftClient client = MinecraftClient.getInstance();
+        if (client.world != null) {
+            TickManager tickManager = client.world.getTickManager();
+            if (!tickManager.isFrozen()){
+                tickRate = Math.min(tickManager.getTickRate(), 20);
+            }
+        }
+        return tickRate;
+    }
+
+}