Log & Trace integration

[wu-sheng]

SkyWalking is enhancing its log integration capability, so, it will accept logs collected by popular tools, such as fluentd, filebeat.
It is better dotnet agent could inject the trace context information as a part of log text, which could make SkyWalking backend links logs and traces together.
You could take Java agent's implementation for a reference, http://skywalking.apache.org/docs/main/v8.5.0/en/setup/service-agent/java-agent/application-toolkit-log4j-1.x/#print-skywalking-context-in-your-logs

[hepinggege]

1.4.0 版本大概什么时候可以发布呢？

[zhujinhu21]

同问大佬，1.4大概时候发布，谢谢

[sjdboy]

同问大佬，1.4大概时候发布，谢谢

快了，现在80%了。感谢大佬辛苦。

[MuXueMaster]

大佬大佬，1.4大概时候发布，谢谢

[MuXueMaster]

大佬，都2022年了，日志好了么？急等啊。

[wu-sheng]

@myokok This is an open-source project, not a service. If someone wants to contribute, it could be there. That is all.

[MuXueMaster]

@myokok This is an open-source project, not a service. If someone wants to contribute, it could be there. That is all.

java的代码我看不懂，要不你给我讲解下逻辑吧？我来写个简单的日志操作。

[wu-sheng]

Fixed by #467