Added Storybook stories for shared survey Banner

ee/app/assets/javascripts/vue_shared/survey_banner/survey_banner.stories.js

+/* eslint-disable @gitlab/require-i18n-strings */
+import SurveyBanner from './survey_banner.vue';
+
+export default {
+  component: SurveyBanner,
+  title: 'vue_shared/components/survey_banner',
+};
+
+const Template = (args, { argTypes }) => ({
+  components: { SurveyBanner },
+  props: Object.keys(argTypes),
+  template: '<survey-banner v-bind="$props" />',
+});
+
+export const Default = Template.bind({});
+
+Default.args = {
+  surveyLink: 'testlink.test',
+  daysToAskLater: 7,
+  title: 'Shared Survey Banner Test Title',
+  buttonText: 'Shared Survey Banner Button Text',
+  description: 'Shared Survey Banner Test Description',
+  toastMessage: 'Shared Survey Banner Test ToastMessage',
+  storageKey: 'testStorageKey',
+  bannerId: 'testbannerID',
+  svgPath: 'https://gitlab-org.gitlab.io/gitlab-svgs/dist/illustrations/monitoring/tracing.svg',
+};