Some Go git hosting, Gogs forks

* new file:   gogs-gitea.md
  * new file:   gogs-notabug.md

gogs-gitea.md

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+
+The git-based code hosting software written in Go, [Gogs](https://gogs.io/),
+was [forked](https://github.com/gogits/gogs/issues/1304) in 2015 
+to form the [Gitea](<https://gitea.io/>) project.
+
+Both projects continue.

gogs-notabug.md

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+
+The git-based code hosting site [notabug](https://notabug.org/) maintains
+[its own fork](https://notabug.org/hp/gogs) or the code hosting software
+[Gogs](https://gogs.io/).
+
+
+
+