Add Colmena to manage systems, use better pathing for smallfetch, use better mountpoints and hostnames from Colema

modules/system/services/server/owncast/default.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, lib, nodes, ... }:
 {
   imports = [ ./nginx ];
 
@@ -7,8 +7,10 @@
       port = 8060;
       rtmp-port = 1945;
     };
-    networking.firewall.extraInputRules = with config.services.mycelium.ips; ''
-      ip6 saddr { ${tower}, ${intuos}, ${jupiter} } tcp dport 1935 accept
+    networking.firewall.extraInputRules = let
+      targetHosts = lib.attrValues (lib.mapAttrs (_: node: node.config.deployment.targetHost) nodes);
+    in ''
+      ip6 saddr { ${lib.concatStringsSep ", " targetHosts} } tcp dport ${toString config.services.owncast.rtmp-port} accept
     '';
     environment.persistence."/persist".directories = [ "/var/lib/owncast" ];
   };