Chore(stress-chaos): Add stress chaos charts (#475)

Signed-off-by: udit <udit@chaosnative.com>

Co-authored-by: Shubham Chaudhary <shubham.chaudhary@mayadata.io>

charts/generic/generic.chartserviceversion.yaml

@@ -37,6 +37,8 @@ spec:
     - node-restart
     - pod-dns-error
     - pod-dns-spoof
+    - pod-cpu-hog-exec
+    - pod-memory-hog-exec
 
   keywords:
     - Kubernetes