[#23] List primary communication channels

[interact]: https://www.bestpractices.dev/en/criteria/0?details=true&rationale=true#0.interact

(close #23)

Signed-off-by: Vitaliy Potyarkin <v.potyarkin@yadro.com>

content/about/forge.en.md

@@ -0,0 +1,14 @@
+---
+title: Using git.frostfs.info
+date: 2025-02-18
+---
+
+All FrostFS repositories are hosted at https://git.frostfs.info which runs an
+instance of Forgejo. Most of the interface will be familiar if you have used
+GitHub or GitLab before.
+
+## Signing in
+
+We recommend you to sign in using your GitHub or Codeberg account.
+If you have neither and do not want to register any you may [contact us]({{<
+relref "contact">}}) and ask for an account.