feat: set up colmena with hetzner stuff

deploy/README.md

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+# `colmena` deployments
+
+* tags: `local`, `cloud`
+* deployments can be made from `astyanax` and `andromache` hosts
+
+## References
+
+- [docs: `colmena`](https://colmena.cli.rs/)
+- [repo: `colmena`](https://github.com/zhaofengli/colmena)

deploy/colmena.nix

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+{
+  self,
+  inputs,
+}:
+
+inputs.colmena.lib.makeHive {
+  meta = {
+    nixpkgs = import inputs.nixpkgs {
+      system = "x86_64-linux";
+    };
+
+    nodeNixpkgs = builtins.mapAttrs (_: v: v.pkgs) self.nixosConfigurations;
+    nodeSpecialArgs = builtins.mapAttrs (_: v: v._module.specialArgs or { }) self.nixosConfigurations;
+  };
+
+  astyanax.deployment.tags = [ "local" ];
+
+  andromache.deployment.tags = [ "local" ];
+
+  vm.deployment.tags = [ "local" ];
+
+  hecuba.deployment = {
+    targetHost = "hecuba";
+    targetUser = "username";
+    targetPort = 22;
+    tags = [ "cloud" ];
+  };
+}