add changelog and logout functionality

src/changelog.rs

@@ -0,0 +1,25 @@
+use maud::{html, Markup};
+
+use crate::templates::layout;
+
+pub fn changelog_page() -> Markup {
+    layout(html! {
+        h1 { "Beacon Changelog" }
+
+        section {
+            h2 { "1.1.0, 07.02.2025" }
+            ul {
+                li { "Fish now directly display their non-relative dates for their next or current window" }
+                li { "Additionally, fish that are up now display the starting time for the subsequent window" }
+                li { "The site now saves your account ID in your browser storage, and automatically redirects you on page visit" }
+            }
+        }
+
+        section {
+            h2 { "1.0.0, 06.02.2025" }
+            ul {
+                li { "Initial release" }
+            }
+        }
+    })
+}