ENG-6008: Add My Preprints route and page template

Author: Uditi Mehta

app/preprints/my-preprints/template.hbs

@@ -0,0 +1,3 @@
+<div data-analytics-scope='my-preprints'>
+    {{outlet}}
+</div>

app/router.ts

@@ -34,6 +34,7 @@ Router.map(function() {
         this.route('submit', { path: '/:provider_id/submit' });
         this.route('edit', { path: '/:provider_id/edit/:guid' });
         this.route('select');
+        this.route('my-preprints');
     });