feat: feature impl

Author: arifBurakDemiray

sdk/src/main/java/ly/count/android/sdk/CountlyConfig.java

@@ -376,6 +376,19 @@ public synchronized CountlyConfig setLoggingEnabled(boolean enabled) {
         return this;
     }
 
+    /**
+     * Set a custom metric provider to override default device metrics.
+     * Only the methods you override will replace the SDK defaults.
+     * Methods that return null will fall back to the SDK's built-in values.
+     *
+     * @param metricProvider Your custom MetricProvider implementation
+     * @return Returns the same config object for convenient linking
+     */
+    public synchronized CountlyConfig setMetricProvider(MetricProvider metricProvider) {
+        this.metricProviderOverride = metricProvider;
+        return this;
+    }
+
     /**
      * Call to enable uncaught crash reporting
      *