conf(che): add devfile

devfile.yaml

+schemaVersion: 2.1.0
+metadata:
+  name: testvnc
+components:
+  - name: testvnc
+    container:
+      image: adrianstoica/it1901:v10
+      memoryLimit: 3Gi
+      endpoints:
+        - exposure: public
+          name: 6080-tcp
+          protocol: http
+          targetPort: 6080
+        - exposure: public
+          name: 6900-tcp
+          protocol: http
+          targetPort: 6900
+          - exposure: public
+          name: 6901-tcp
+          protocol: http
+          targetPort: 6901
\ No newline at end of file