Port to Architectury

Yes, that also means Forge!
And yes, this was pain.
And no, the file size has not increased much!

common/src/main/java/eu/midnightdust/hats/web/PlayerHatData.java

@@ -0,0 +1,13 @@
+package eu.midnightdust.hats.web;
+
+public class PlayerHatData {
+    private final String hat;
+
+    public PlayerHatData(String hat) {
+        this.hat = hat;
+    }
+
+    public String getHatType() {
+        return hat;
+    }
+}