Add initial ROS core chart for drone demo

Change-Id: I065c9640a1d965e53b8a691413d59a41c278dece
diff --git a/apps/ros-core/templates/_helpers.tpl b/apps/ros-core/templates/_helpers.tpl
new file mode 100644
index 0000000..706bdf7
--- /dev/null
+++ b/apps/ros-core/templates/_helpers.tpl
@@ -0,0 +1,28 @@
+{{- /*
+
+# Copyright 2020-present Open Networking Foundation
+#
+# SPDX-License-Identifier: LicenseRef-ONF-Member-Only-1.0
+
+*/ -}}
+
+{{/*
+Renders a set of standardised labels.
+*/}}
+{{- define "ros-core.metadata_labels" -}}
+{{- $application := index . 0 -}}
+{{- $context := index . 1 -}}
+release: {{ $context.Release.Name }}
+app: {{ $application }}
+{{- end -}}
+
+{{/*
+Render the given template.
+*/}}
+{{- define "ros-core.template" -}}
+{{- $name := index . 0 -}}
+{{- $context := index . 1 -}}
+{{- $last := base $context.Template.Name }}
+{{- $wtf := $context.Template.Name | replace $last $name -}}
+{{ include $wtf $context }}
+{{- end -}}