Draft: Resolve "[New data model] PDF export for "regular" timetable"

Closes #46

aleksis/apps/lesrooster/frontend/components/timetables/GroupTimeTable.vue

+<script>
+import { defineComponent } from "vue";
+import { lessonsGroup } from "./timetables.graphql";
+import MiniTimeTable from "./MiniTimeTable.vue";
+
+export default defineComponent({
+  name: "GroupTimeTable",
+  extends: MiniTimeTable,
+  props: {
+    id: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    lessons() {
+      return this.lessonsGroup;
+    },
+    loading() {
+      return this.$apollo.queries.lessonsGroup.loading;
+    },
+  },
+  apollo: {
+    lessonsGroup: {
+      query: lessonsGroup,
+      variables() {
+        console.log(this.timeGrid, "TIMEGRID");
+        return {
+          timeGrid: this.timeGrid.id,
+          group: this.id,
+        };
+      },
+      skip() {
+        return this.timeGrid === null;
+      },
+    },
+  },
+});
+</script>