feat: Begins migrating views from leaf to elementary

Sources/App/Views/Main.swift

@@ -0,0 +1,43 @@
+import Elementary
+import ElementaryHTMX
+
+struct MainPage<Inner: HTML>: HTMLDocument {
+
+  var title: String { "Purchase Orders" }
+
+  let inner: Inner
+  let displayNav: Bool
+
+  init(displayNav: Bool = false, _ inner: () -> Inner) {
+    self.displayNav = displayNav
+    self.inner = inner()
+  }
+
+  var head: some HTML {
+    meta(.charset(.utf8))
+    script(.src("https://unpkg.com/htmx.org@2.0.4")) {}
+    script(.src("/js/main.js")) {}
+    link(.rel(.stylesheet), .href("/css/main.css"))
+  }
+
+  var body: some HTML {
+    header {
+      Logo()
+      if displayNav {
+        Navbar()
+      }
+    }
+    inner
+  }
+}
+
+extension MainPage: Sendable where Inner: Sendable {}
+
+struct Logo: HTML, Sendable {
+
+  var content: some HTML {
+    div(.id("logo")) {
+      "HHE - Purchase Orders"
+    }
+  }
+}