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/scss/custom.scss

@@ -0,0 +1,34 @@
+$primary-color: #2bcbba;
+
+.loader {
+    color: $primary-color;
+}
+
+a {
+    color: $primary-color;
+}
+
+a:hover {
+    color: darken($primary-color, 10%);
+}
+
+.dropdown-item.active, .dropdown-item:active {
+    background-color: $primary-color;
+}
+
+.custom-switch-input:checked ~ .custom-switch-indicator {
+    background: $primary-color;
+}
+
+.min-100 {
+    min-height: 100px;
+}
+
+.card-options .dropdown-menu a:not(.btn) {
+    margin-left: 0;
+}
+
+.wrap {
+    display: flex;
+    flex-wrap: wrap;
+}