create category queries

+import { gql } from "apollo-boost";
+
+export const GET_CATEGORIRES = gql`
+  {
+    getCategories {
+      id
+      name
+    }
+  }
+`;
+
+export const ADD_CATEGORY = gql`
+  mutation addCategory($name: String!) {
+    addCategory(name: $name) {
+      id
+      name
+    }
+  }
+`;
+
+export const EDIT_CATEGORY = gql`
+  mutation editCategory($name: String!) {
+    editCategory(name: $name) {
+      id
+      name
+    }
+  }
+`;
+
+export const DELETE_CATEGORY = gql`
+  mutation deleteCategory($name: String!) {
+    deleteCategory(name: $name)
+  }
+`;