doc: move bug reporting instructions to the repository

Mostly taken from
  https://webrtc.github.io/webrtc-org/bugs/
with the updated list of bugtrackers from
  https://webrtc.org/support/bug-reporting
and adding the native logging instructions from
  https://webrtc.github.io/webrtc-org/native-code/logging/

Bug: none
Change-Id: Ifcf1409fc61dfd280105dae9024e275239831eeb
No-Try: true
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/189966
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Cr-Commit-Position: refs/heads/master@{#32463}
diff --git a/README.md b/README.md
index e91fb16..1624e98 100644
--- a/README.md
+++ b/README.md
@@ -26,5 +26,6 @@
  * Continuous build: http://build.chromium.org/p/client.webrtc
  * [Coding style guide](style-guide.md)
  * [Code of conduct](CODE_OF_CONDUCT.md)
+ * [Reporting bugs](docs/bug-reporting.md)
 
 [native-dev]: https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/index.md