Updated docs/developement/Roadmap.md

Author: p0dalirius

docs/development/Roadmap.md

@@ -57,9 +57,18 @@ graph TD
     TCP:::green
     Kerberos:::red
 
-    classDef green fill:#44cc44,stroke:#333,stroke-width:2px;
-    classDef orange fill:#ff9900,stroke:#333,stroke-width:2px;
-    classDef red fill:#ff4d4d,stroke:#333,stroke-width:2px;
+    classDef green fill:#cdf7cd,stroke:#333,stroke-width:2px;
+    classDef orange fill:#ffdfb0,stroke:#333,stroke-width:2px;
+    classDef red fill:#f5b3b3,stroke:#333,stroke-width:2px;
+
+    %% Legend
+    %% Green: Implemented, Orange: Partly Complete, Red: To Do
+    classLegendGreen[Green = Implemented]:::green
+    classLegendOrange[Orange = Partly Complete]:::orange
+    classLegendRed[Red = To Do]:::red
+
+    %% Arrange the legend visually
+    classLegendGreen -.-> classLegendOrange -.-> classLegendRed
 ```