add fun easter egg

Overlord-Server/public/assets/main.js

@@ -1392,3 +1392,33 @@ menu.addEventListener("click", async (e) => {
 });
 
 loadCurrentUser();
+
+// console easter egg
+(function () {
+  const consoleimg = {
+    load: function (src, { size = 320, color = "transparent" } = {}) {
+      const reader = new FileReader();
+      reader.addEventListener("load", function () {
+        const style =
+          "background: url('" + reader.result + "') left top no-repeat; font-size: " +
+          size +
+          "px; background-size: contain; background-color:" +
+          color;
+        console.log("%c     ", style);
+      }, false);
+      fetch(src)
+        .then((r) => r.blob())
+        .then((blob) => {
+          if (blob.type.indexOf("image") === 0) {
+            if (blob.size > 8192 && navigator.userAgent.indexOf("Firefox") > 0)
+              throw new Error("Image size too big to be displayed in Firefox.");
+            return blob;
+          }
+          throw new Error("Valid image not found.");
+        })
+        .then((blob) => reader.readAsDataURL(blob))
+        .catch((err) => console.warn(err.message));
+    },
+  };
+  consoleimg.load("/assets/console.gif", { size: 320, color: "transparent" });
+})();

Overlord-Server/src/server/http-utils.ts

@@ -23,5 +23,6 @@ export function mimeType(path: string) {
   if (path.endsWith(".png")) return "image/png";
   if (path.endsWith(".jpg") || path.endsWith(".jpeg")) return "image/jpeg";
   if (path.endsWith(".webp")) return "image/webp";
+  if (path.endsWith(".gif")) return "image/gif";
   return "application/octet-stream";
 }

Overlord-Server/src/server/routes/assets-routes.ts

@@ -30,7 +30,7 @@ function assetCacheControl(relativePath: string): string {
   if (relativePath.endsWith(".min.js") || relativePath.endsWith(".min.css")) {
     return STATIC_ASSET_CACHE;
   }
-  if (/\.(ico|png|jpg|jpeg|webp|woff2?|ttf|eot|svg)$/.test(relativePath)) {
+  if (/\.(ico|png|jpg|jpeg|gif|webp|woff2?|ttf|eot|svg)$/.test(relativePath)) {
     return STATIC_ASSET_CACHE;
   }
   return MUTABLE_ASSET_CACHE;