switch to netdata cloud

fix performance issues with caddy mostly

apps/netdata-cloud.nix

@@ -0,0 +1,19 @@
+{ pkgs, ... }: {
+
+  type = "app";
+
+  program = builtins.toString (pkgs.writeShellScript "netdata-cloud" ''
+    if [ "$EUID" -ne 0 ]; then
+      echo "Please run as root"
+      exit 1
+    fi
+    mkdir --parents --mode 0750 /var/lib/netdata/cloud.d
+    printf "\nEnter the claim token for netdata cloud...\n\n"
+    read -p "Token: " token
+    echo "''${token}" > /var/lib/netdata/cloud.d/token
+    chown -R netdata:netdata /var/lib/netdata
+    ${pkgs.netdata}/bin/netdata-claim.sh -id=$(uuidgen)
+    printf "\n\nNow restart netdata service.\n\n"
+  '');
+
+}