feat: add app SearXNG

apps/searxng/data.yml

@@ -0,0 +1,21 @@
+name: SearXNG
+tags:
+  - Tool
+  - DevTool
+  - Local
+title: 一个免费的互联网元聚合搜索引擎
+description: 一个免费的互联网元聚合搜索引擎
+additionalProperties:
+  key: searxng
+  name: SearXNG
+  tags:
+    - Website
+  shortDescZh: 一个免费的互联网元聚合搜索引擎
+  shortDescEn: A free internet meta-aggregator search engine
+  type: website
+  crossVersionUpdate: true
+  limit: 0
+  recommend: 0
+  website: https://github.com/searxng/searxng
+  github: https://github.com/searxng/searxng
+  document: https://docs.searxng.org/