feat: Resolve all deprecation warnings for sass

- Replace @import with @use and @forward
- Only color function is used in _basic.scss for now
- Change _all.scss to _index.scss
- Modules use direct dependencies
- Move @include from _config.scss to _common.scss, this was a long term mistake
- Remove $color_list
- Change basic_color()

modules/maintenance/_maintenance_module.scss

@@ -1,7 +1,12 @@
+@use "../../global/config";
+@use "../../global/common";
+@use "../../elements/sections";
+@use "../../functions/color" as *;
+
 .body_status {
   @extend .sec_main_status;
   height: 100vh;
-  border-color: $foxtrot_color;
+  border-color: basic_color(foxtrot);
 
   .main_site {
     @extend .wrap_center;
@@ -13,7 +18,7 @@
     }
     & > h1 + h3 {
       margin-top: 0;
-      margin-bottom: $space_small;
+      margin-bottom: config.$space_small;
     }
   }
 }