Enable Typescript noImplicitThis (#33250)

- Enable https://www.typescriptlang.org/tsconfig/#noImplicitThis
- Wrap Vue Template-Syntax SFCs in
[`defineComponent`](https://vuejs.org/api/general#definecomponent) which
makes type inference and linter work better
- Move `createApp` calls outside the SFCs into separate files
- Use [`PropType`](https://vuejs.org/api/utility-types#proptype-t) where
appropriate
- Some top-level component properties changed order as dictated by the
linter
- Fix all tsc and lint issues that popped up during these refactors

web_src/js/features/dashboard.ts

@@ -0,0 +1,9 @@
+import {createApp} from 'vue';
+import DashboardRepoList from '../components/DashboardRepoList.vue';
+
+export function initDashboardRepoList() {
+  const el = document.querySelector('#dashboard-repo-list');
+  if (el) {
+    createApp(DashboardRepoList).mount(el);
+  }
+}