update bootstrap&bootswatch 5.0.2 -> 5.2.2. Seperate bootswatch overrides for future update easiness

dev/scss/bootswatch/darkly/_bootswatch.scss

@@ -0,0 +1,84 @@
+// Darkly 5.2.2
+// Bootswatch
+
+
+// Variables
+
+$web-font-path: "https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,400;0,700;1,400&display=swap" !default;
+@if $web-font-path {
+  @import url($web-font-path);
+}
+
+:root {
+  color-scheme: dark;
+}
+
+// Typography
+
+.blockquote {
+  &-footer {
+    color: $gray-600;
+  }
+}
+
+// Forms
+
+.form-control {
+  color-scheme: light;
+}
+
+.input-group-addon {
+  color: $white;
+}
+
+.form-floating > label {
+  color: $gray-700;
+}
+
+// Navs
+
+.nav-tabs,
+.nav-pills {
+  .nav-link,
+  .nav-link.active,
+  .nav-link.active:focus,
+  .nav-link.active:hover,
+  .nav-item.open .nav-link,
+  .nav-item.open .nav-link:focus,
+  .nav-item.open .nav-link:hover {
+    color: $white;
+  }
+}
+
+.breadcrumb a {
+  color: $white;
+}
+
+.pagination {
+  a:hover {
+    text-decoration: none;
+  }
+}
+
+// Indicators
+
+.alert {
+  color: $white;
+  border: none;
+
+  a,
+  .alert-link {
+    color: $white;
+    text-decoration: underline;
+  }
+
+  @each $color, $value in $theme-colors {
+    &-#{$color} {
+      @if $enable-gradients {
+        background: $value linear-gradient(180deg, mix($white, $value, 15%), $value) repeat-x;
+      } @else {
+        background-color: $value;
+      }
+    }
+  }
+}