Directory restructure to add scenarios and experiments (#559)

* Updated dir struture with scenarios and experiments dir

Signed-off-by: Amit Kumar Das <amit.das@harness.io>

* Added icons

Signed-off-by: Amit Kumar Das <amit.das@harness.io>

experiments/generic/pod-memory-hog-exec/engine.yaml

@@ -0,0 +1,29 @@
+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: nginx-chaos
+  namespace: default
+spec:
+  # It can be active/stop
+  engineState: 'active'
+  appinfo:
+    appns: 'default'
+    applabel: 'app=nginx'
+    appkind: 'deployment'
+  chaosServiceAccount: pod-memory-hog-exec-sa
+  experiments:
+    - name: pod-memory-hog-exec
+      spec:
+        components:
+          env:
+            - name: TOTAL_CHAOS_DURATION
+              value: '60' # in seconds
+
+            # Enter the amount of memory in megabytes to be consumed by the application pod
+            - name: MEMORY_CONSUMPTION
+              value: '500'
+
+            ## percentage of total pods to target
+            - name: PODS_AFFECTED_PERC
+              value: ''
+