Added special server messages enum

src/main/java/Main/Messages.java

@@ -0,0 +1,20 @@
+package Main;
+
+public enum Messages {
+    IAMBOB("I am bob"),
+    IAMALICE("I am alice"),
+    A("a"),
+    B("b"),
+    HASH("hash"),
+    MESSAGE("message");
+
+    private String text;
+
+    Messages(String text) {
+        this.text = text;
+    }
+
+    public String getText() {
+        return text;
+    }
+}