feat: initialize warpbox.dev project structure and backend

Initialize the repository with the core Go backend architecture and a frontend mockup for warpbox.dev, a self-hosted file-sharing application.

- Set up Go backend modules for configuration, HTTP server, middleware, handlers, and templates.
- Add local development scripts, environment templates, and basic project configuration.
- Include a React-based frontend mockup under the docs directory.

docs/Mock-Up/Mockup Magic/eslint.config.js

@@ -0,0 +1,40 @@
+import js from "@eslint/js";
+import eslintPluginPrettier from "eslint-plugin-prettier/recommended";
+import globals from "globals";
+import reactHooks from "eslint-plugin-react-hooks";
+import reactRefresh from "eslint-plugin-react-refresh";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+  { ignores: ["dist", ".output", ".vinxi"] },
+  {
+    extends: [js.configs.recommended, ...tseslint.configs.recommended],
+    files: ["**/*.{ts,tsx}"],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+    plugins: {
+      "react-hooks": reactHooks,
+      "react-refresh": reactRefresh,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      "no-restricted-imports": [
+        "error",
+        {
+          paths: [
+            {
+              name: "server-only",
+              message:
+                "TanStack Start does not use the Next.js `server-only` package. Rename the module to `*.server.ts` or mark it with `@tanstack/react-start/server-only`.",
+            },
+          ],
+        },
+      ],
+      "react-refresh/only-export-components": ["warn", { allowConstantExport: true }],
+      "@typescript-eslint/no-unused-vars": "off",
+    },
+  },
+  eslintPluginPrettier,
+);