adding a flake.nix file to build this shell with nix

flake.lock

@@ -0,0 +1,64 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1755615617,
+        "narHash": "sha256-HMwfAJBdrr8wXAkbGhtcby1zGFvs+StOp19xNsbqdOg=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "20075955deac2583bb12f07151c2df830ef346b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "quickshell": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1753595452,
+        "narHash": "sha256-vqkSDvh7hWhPvNjMjEDV4KbSCv2jyl2Arh73ZXe274k=",
+        "ref": "refs/heads/master",
+        "rev": "a5431dd02dc23d9ef1680e67777fed00fe5f7cda",
+        "revCount": 665,
+        "type": "git",
+        "url": "https://git.outfoxxed.me/outfoxxed/quickshell"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://git.outfoxxed.me/outfoxxed/quickshell"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "quickshell": "quickshell",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}