feat: Adds route query parameter to home, htmx updates url, and working next parameter for login

Resources/Views/login.leaf

@@ -1,3 +1,5 @@
+#extend("index"):
+#export("content"):
 <div id="content">
   <header>
     <div class="container">
@@ -5,7 +7,11 @@
     </div>
   </header>
 
-  <form class="login-form" hx-post="/login" hx-target="#content" hx-swap="outerHTML">
+  <form class="login-form"
+        hx-post="#(route)"
+        hx-target="body"
+        hx-push-url="true"
+        >
     <label for="username">Username</label>
     <input type="text" id="username" placeholder="Username" name="username" autocomplete="username" required autofocus>
     <br>
@@ -15,3 +21,5 @@
     <input type="submit" value="Sign In">
   </form>
 </div>
+#endexport
+#endextend