feat: Added documentation for OHIF-v3 (#2450)

* Added docs with new screenshots

* Added doc to architecture

* Added documentations to various extension modules

* Added more documentation to modes

* Added docs to managers

* Added docs for services

* Fixed deployment docs

* Added white labelling documentation

* Added i18n docs and measurement export

docs/v2/development/getting-started.md

@@ -67,8 +67,10 @@ You should see the following output:
 
 ### 🎉 Celebrate 🎉
 
+
+
 <center>
-  <img alt="development server hosted app" src="/assets/img/loading-study.gif" />
+  <div style="padding:56.25% 0 0 0;position:relative;"><iframe src="https://player.vimeo.com/video/547952862?badge=0&amp;autopause=0&amp;player_id=0&amp;app_id=58479" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen style="position:absolute;top:0;left:0;width:100%;height:100%;" title="Getting Started (v2)"></iframe></div><script src="https://player.vimeo.com/api/player.js"></script>
   <i>Our app, hosted by the development server</i>
 </center>