feat!: dynamically create hosts

This commit completely restructures the flake. Hosts are now seperate
from profile configuration files in hosts/[system]. Nixos and Darwin
configurations will be built when present in the respective folders in hosts/

profiles/server/nixos/calibre.nix

@@ -0,0 +1,32 @@
+{ pkgs, config, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    calibre
+  ];
+
+  sops.secrets.kavita = { owner = "kavita"; };
+
+  services.kavita = {
+    enable = true;
+    user = "kavita";
+    port = 8080;
+    tokenKeyFile = config.sops.secrets.kavita.path;
+  };
+
+  services.nginx = {
+    "scroll.swarsel.win" = {
+      enableACME = true;
+      forceSSL = true;
+      acmeRoot = null;
+      locations = {
+        "/" = {
+          proxyPass = "http://192.168.1.22:8080";
+          extraConfig = ''
+            client_max_body_size 0;
+          '';
+        };
+      };
+    };
+  };
+
+}