refactor(flake-parts): initial flake-parts configuration

inputs/home/modules/console/utility/transientServices/default.nix

@@ -0,0 +1,33 @@
+# taken from github:NotAShelf/fufexan
+{ pkgs, config, lib, ... }: 
+let
+  cfg = config.homeModules.console.utility.transientServices;
+  apply-hm-env = pkgs.writeShellScript "apply-hm-env" ''
+    ${lib.optionalString (config.home.sessionPath != []) ''
+      export PATH=${builtins.concatStringsSep ":" config.home.sessionPath}:$PATH
+    ''}
+    ${builtins.concatStringsSep "\n" (lib.mapAttrsToList (k: v: ''
+        export ${k}=${toString v}
+      '')
+      config.home.sessionVariables)}
+    ${config.home.sessionVariablesExtra}
+    exec "$@"
+  '';
+
+  # runs processes as systemd transient services
+  run-as-service = pkgs.writeShellScriptBin "run-as-service" ''
+    exec ${pkgs.systemd}/bin/systemd-run \
+      --slice=app-manual.slice \
+      --property=ExitType=cgroup \
+      --user \
+      --wait \
+      bash -lc "exec ${apply-hm-env} $@"
+  '';
+in 
+{
+  config = lib.mkIf cfg.enable {
+    home = {
+      packages = [run-as-service];
+    };
+  };
+}