eslint for bruno-app and bruno-electron packages (#4622)

Co-authored-by: lohit <lohit@usebruno.com>

eslint.config.js

@@ -0,0 +1,41 @@
+// eslint.config.js
+const { defineConfig } = require("eslint/config");
+const globals = require("globals");
+
+module.exports = defineConfig([
+  {
+    files: ["packages/bruno-app/**/*.{js,jsx,ts}"],
+    ignores: ["**/*.config.js"],
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.jest,
+        global: false,
+        require: false,
+        Buffer: false,
+        process: false
+      },
+      parserOptions: {
+        ecmaFeatures: {
+          jsx: true,
+        },
+      },
+    },
+    rules: {
+      "no-undef": "error",
+    },
+  },
+  {
+    files: ["packages/bruno-electron/**/*.{js}"],
+    ignores: ["**/*.config.js"],
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.jest,
+      },
+    },
+    rules: {
+      "no-undef": "error",
+    },
+  }
+]);