perf: 支持全局的 labels (#12043)

* perf: 支持全局的 labels

* perf: stash

* stash

* stash

* stash

* stash

* perf: 优化 labels

* stash

* perf: add debug sql

* perf: 修改 labels

* perf: 优化提交

* perf: 优化提交 labels

* perf: 基本完成

* perf: 完成 labels 搜索

* perf: 优化 labels

* perf: 去掉不用 debug

---------

Co-authored-by: ibuler <ibuler@qq.com>

apps/labels/mixins.py

@@ -0,0 +1,13 @@
+from django.contrib.contenttypes.fields import GenericRelation
+from django.db import models
+
+from .models import LabeledResource
+
+__all__ = ['LabeledMixin']
+
+
+class LabeledMixin(models.Model):
+    labels = GenericRelation(LabeledResource, object_id_field='res_id', content_type_field='res_type')
+
+    class Meta:
+        abstract = True