fix: moment cannot be deleted (#88)

#### What type of PR is this?

/kind bug

#### What this PR does / why we need it:

解决由于 Finalizer 标记没有被清除导致无法删除数据的问题

#### Which issue(s) this PR fixes:

Fixes #85 

#### Does this PR introduce a user-facing change?
```release-note
解决无法删除瞬间的问题
```

Author: LIlGG

src/main/java/run/halo/moments/TagReconciler.java

@@ -0,0 +1,45 @@
+package run.halo.moments;
+
+
+import java.util.Set;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import run.halo.app.extension.ExtensionClient;
+import run.halo.app.extension.ExtensionUtil;
+import run.halo.app.extension.controller.Controller;
+import run.halo.app.extension.controller.ControllerBuilder;
+import run.halo.app.extension.controller.Reconciler;
+
+/**
+ * Compatible with the {@link TagReconciler#TAG_FINALIZER} added in old data to avoid the
+ * problem of data not being able to be deleted due to uncleared
+ * {@link TagReconciler#TAG_FINALIZER}.
+ */
+@Deprecated(forRemoval = true, since = "1.5.1")
+@Component
+@RequiredArgsConstructor
+public class TagReconciler implements Reconciler<Reconciler.Request> {
+
+    private static final String TAG_FINALIZER = "tag-moment-protection";
+    private final ExtensionClient client;
+
+    @Override
+    public Result reconcile(Request request) {
+        client.fetch(Moment.class, request.name()).ifPresent(moment -> {
+            if (ExtensionUtil.isDeleted(moment)) {
+                if (ExtensionUtil.removeFinalizers(moment.getMetadata(), Set.of(TAG_FINALIZER))) {
+                    client.update(moment);
+                }
+            }
+        });
+        return Result.doNotRetry();
+    }
+
+    @Override
+    public Controller setupWith(ControllerBuilder builder) {
+        final var moment = new Moment();
+        return builder
+            .extension(moment)
+            .build();
+    }
+}