Add go schedular content and roadmap node (#5635)

src/data/roadmaps/golang/content/101-go-advanced/110-scheduler.md

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+# Go Scheduler
+
+Go Scheduler allows us to understand more deeply about how Golang works internally. In terms of logical prcoessors, 
+cores, threads, pool cache, context switching etc. The Go scheduler is part of the Go runtime, and the Go runtime 
+is built into your application
+
+Visit the following resources to learn more:
+
+- [OS Scheduler](https://www.ardanlabs.com/blog/2018/08/scheduling-in-go-part1.html)
+- [Go Scheduler](https://www.ardanlabs.com/blog/2018/08/scheduling-in-go-part2.html)
+- [Illustrated Tales of Go Runtime Scheduler](https://medium.com/@ankur_anand/illustrated-tales-of-go-runtime-scheduler-74809ef6d19b)
+- [Go scheduler: Implementing language with lightweight concurrency](https://www.youtube.com/watch?v=-K11rY57K7k&ab_channel=Hydra)