chore(dev): move nix flake to top level, add api tooling

frontend/.envrc

@@ -1 +0,0 @@
-use flake

frontend/.gitignore

@@ -13,7 +13,6 @@ node_modules
 /dist*
 coverage
 *.zip
-.direnv/
 
 # Test files
 cypress/screenshots

frontend/flake.lock

@@ -1,25 +0,0 @@
-{
-  "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1701336116,
-        "narHash": "sha256-kEmpezCR/FpITc6yMbAh4WrOCiT2zg5pSjnKrq51h5Y=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "f5c27c6136db4d76c30e533c20517df6864c46ee",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
-      }
-    },
-    "root": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

frontend/flake.nix

@@ -1,10 +0,0 @@
-{
-  description = "Vikunja frontend dev environment";
-
-  outputs = { self, nixpkgs }:
-    let pkgs = nixpkgs.legacyPackages.x86_64-linux;
-    in {
-      defaultPackage.x86_64-linux =
-        pkgs.mkShell { buildInputs = [ pkgs.nodePackages.pnpm pkgs.cypress pkgs.git-cliff ]; };
-    };
-}