feat: Working on dehumidifier sizing, api and routes implemented, views are not complete.

Sources/ViewController/Views/MainPage.swift

@@ -1,4 +1,6 @@
 import Elementary
+import ElementaryHTMX
+import Routes
 import Styleguide
 
 struct MainPage<Inner: HTML>: SendableHTMLDocument where Inner: Sendable {
@@ -68,7 +70,10 @@ private struct Header: HTML {
             }
           }
           li {
-            a(.href("#"), .class("[&:hover]:border-b \(border: .yellow)")) {
+            a(
+              .class("[&:hover]:border-b \(border: .yellow)"),
+              .hx.get(route: .dehumidifierSize(.index)), .hx.target("#content"), .hx.pushURL(true)
+            ) {
               "Dehumidifier-Sizing"
             }
           }