Expose server build information

Co-authored-by: Professor Bloodstone <git@bloodstone.dev>
Co-authored-by: Mark Vainomaa <mikroskeem@mikroskeem.eu>
Co-authored-by: masmc05 <masmc05@gmail.com>
Co-authored-by: Riley Park <rileysebastianpark@gmail.com>

paper-api/src/main/java/org/bukkit/UnsafeValues.java

@@ -156,4 +156,13 @@ public interface UnsafeValues {
         return !Bukkit.getUnsafe().isSupportedApiVersion(plugin.getDescription().getAPIVersion());
     }
     // Paper end
+
+    // Paper start
+    /**
+     * Called once by the version command on first use, then cached.
+     */
+    default com.destroystokyo.paper.util.VersionFetcher getVersionFetcher() {
+        return new com.destroystokyo.paper.util.VersionFetcher.DummyVersionFetcher();
+    }
+    // Paper end
 }