Major overhaul

- Docker buildx support in CI
- Cypress API Testing in CI
- Restructured folder layout (insert clean face meme)
- Added Swagger documentation and validate API against that (to be completed)
- Use common base image for all supported archs, which includes updated nginx with ipv6 support
- Updated certbot and changes required for it
- Large amount of Hosts names will wrap in UI
- Updated packages for frontend
- Version bump 2.1.0

frontend/js/app/ui/main.ejs

@@ -0,0 +1,19 @@
+<div class="page-main">
+    <div class="header" id="header">
+        <!-- Header View -->
+    </div>
+    <div id="menu">
+        <!-- Menu View -->
+    </div>
+    <div class="my-3 my-md-5">
+        <div id="app-content" class="container">
+            <!-- App View -->
+        </div>
+    </div>
+</div>
+
+<footer class="footer">
+    <!-- Footer View -->
+</footer>
+
+<div class="modal fade" id="modal-dialog" tabindex="-1" role="dialog" aria-hidden="true" data-backdrop="static" data-keyboard="false"></div>