[comp] add YunoAlert component

app/src/components/globals/YunoAlert.vue

@@ -0,0 +1,35 @@
+<template>
+  <component
+    v-bind="$attrs"
+    :is="alert ? 'b-alert' : 'div'"
+    :variant="alert ? variant : null"
+    :class="{ ['alert alert-' + variant]: !alert }"
+    class="d-flex flex-column flex-md-row align-items-center"
+  >
+    <icon :iname="_icon" class="mr-md-3 mb-md-0 mb-2" :variant="variant" />
+
+    <div class="w-100">
+      <slot name="default" />
+    </div>
+  </component>
+</template>
+
+<script>
+import { DEFAULT_STATUS_ICON } from '@/helpers/yunohostArguments'
+
+export default {
+  name: 'YunoAlert',
+
+  props: {
+    alert: { type: Boolean, default: false },
+    variant: { type: String, default: 'info' },
+    icon: { type: String, default: null }
+  },
+
+  computed: {
+    _icon () {
+      return DEFAULT_STATUS_ICON[this.variant]
+    }
+  }
+}
+</script>