新增说明文件；新增kiwix-serve、papermc示例；更新README.md文件

examples/papermc/paper/example/plugins/bStats/config.yml

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+# bStats collects some data for plugin authors like how many servers are using their plugins.
+# To honor their work, you should not disable it.
+# This has nearly no effect on the server performance!
+# Check out https://bStats.org/ to learn more :)
+
+enabled: true
+serverUuid: 4062765f-c9ca-4314-8170-5b58a1d2a7ba
+logFailedRequests: false