Updated FITBIT classes

src/main/java/manage/FITBITData/Activity.java

@@ -0,0 +1,4 @@
+package manage.FITBITData;
+
+public class Activity {
+}

src/main/java/manage/FITBITData/HeartRate.java

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+package manage.FITBITData;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+
+public class HeartRate {
+
+    @JsonProperty("dateTime")
+    public String date;
+}

src/main/java/manage/FITBITData/Location.java

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+package manage.FITBITData;
+
+public class Location {
+}

src/main/java/manage/FITBITData/Sleep.java

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+package manage.FITBITData;
+
+public class Sleep {
+}