Cleanup: use Java17' Records.

Fixes #1526.

src/main/java/de/dennisguse/opentracks/data/models/Cadence.java

@@ -5,7 +5,7 @@ import androidx.annotation.NonNull;
 import java.time.Duration;
 import java.util.Objects;
 
-public class Cadence {
+public record Cadence(float value_rpm) {
 
     public static Cadence of(float value, Duration duration) {
         if (duration.isZero()) {
@@ -23,34 +23,7 @@ public class Cadence {
         return of(0.0f);
     }
 
-    private final float value_rpm;
-
-    private Cadence(float value) {
-        this.value_rpm = value;
-    }
-
     public float getRPM() {
         return value_rpm;
     }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        Cadence cadence = (Cadence) o;
-        return Float.compare(cadence.value_rpm, value_rpm) == 0;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(value_rpm);
-    }
-
-    @NonNull
-    @Override
-    public String toString() {
-        return "Cadence{" +
-                "value=" + value_rpm + " rpm" +
-                '}';
-    }
 }