znc: add page (#16165)

* Create znc.md

* Update znc.md

* Update pages/linux/znc.md

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

* Update znc.md

* Update pages/linux/znc.md

Co-authored-by: Machiavelli <145562237+MachiavelliII@users.noreply.github.com>

---------

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>
Co-authored-by: Machiavelli <145562237+MachiavelliII@users.noreply.github.com>

pages/linux/znc.md

@@ -0,0 +1,20 @@
+# znc
+
+> IRC bouncer.
+> More information: <https://manned.org/znc>.
+
+- Run the initial setup:
+
+`znc {{[-c|--makeconf]}}`
+
+- Start the IRC bouncer daemon:
+
+`znc`
+
+- Setup `znc` for systemd:
+
+`sudo {{[-u|--user]}} znc znc {{[-c|--makeconf]}} {{[-d|--datadir]}} /var/lib/znc`
+
+- Enable `znc` to start on boot and start it now:
+
+`systemctl enable znc --now`