Adds bird v0 branch.

oop/code/oop/src/main/java/com/scaler/lld/bird/Bird.java

@@ -0,0 +1,24 @@
+package com.scaler.lld.bird;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class Bird {
+    private Integer weight;
+    private String colour;
+    private String size;
+    private String beakType;
+    private BirdType type;
+
+    public void fly() {
+        if (type == BirdType.Eagle) {
+            System.out.println("Eagle is flying");
+        } else if (type == BirdType.Penguin) {
+            System.out.println("Penguin is swimming");
+        } else if (type == BirdType.Parrot) {
+            System.out.println("Parrot is flying");
+        }
+    }
+}

oop/code/oop/src/main/java/com/scaler/lld/bird/BirdType.java

@@ -0,0 +1,5 @@
+package com.scaler.lld.bird;
+
+public enum BirdType {
+    Eagle, Penguin, Parrot
+}