Add DataTracker and TrackedData

Core/src/main/java/fr/altarik/toolbox/core/data/DataTracker.java

@@ -0,0 +1,37 @@
+package fr.altarik.toolbox.core.data;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+public class DataTracker {
+
+    private final Map<TrackedData, String> trackedData;
+
+    public DataTracker() {
+        this.trackedData = new HashMap<>();
+    }
+
+    public void startTracking(TrackedData data) {
+        trackedData.put(data, data.defaultValue());
+    }
+
+    public String getOrDefault(TrackedData data) {
+        return Objects.requireNonNull(trackedData.get(data));
+    }
+
+    public void set(TrackedData data, String value) {
+        String v = trackedData.get(data);
+        if(v != null) {
+            trackedData.putIfAbsent(data, value);
+        } else {
+            throw new IllegalArgumentException("Data " + data.name() + " is not tracked, please initialize it with DataTracker#startTracking(TrackedData, String) first");
+        }
+
+    }
+
+    public void saveToDb() {
+
+    }
+
+}

Core/src/main/java/fr/altarik/toolbox/core/data/TrackedData.java

@@ -0,0 +1,5 @@
+package fr.altarik.toolbox.core.data;
+
+public record TrackedData(String name, String defaultValue) {
+
+}