feat: network headers config entry

Author: arifBurakDemiray

sdk-java/src/main/java/ly/count/sdk/java/Config.java

@@ -230,6 +230,12 @@ public class Config {
      */
     protected boolean unhandledCrashReportingEnabled = true;
 
+    /**
+     * Custom network request headers to be sent with each request.
+     * If you want to add a header, use {@link #addCustomNetworkRequestHeaders(Map)}.
+     */
+    protected Map<String, String> customNetworkRequestHeaders = null;
+
     public ConfigViews views = new ConfigViews(this);
 
     protected String location = null;
@@ -1330,6 +1336,20 @@ public Config disableLocation() {
         return this;
     }
 
+    /**
+     * Allows you to add custom header key/value pairs to each request
+     *
+     * @return Returns the same config object for convenient linking
+     */
+    public Config addCustomNetworkRequestHeaders(Map<String, String> customHeaderValues) {
+        this.customNetworkRequestHeaders = customHeaderValues;
+        return this;
+    }
+
+    public Map<String, String> getCustomNetworkRequestHeaders() {
+        return customNetworkRequestHeaders;
+    }
+
     /**
      * Logging level for {@link Log} module
      */