Migrate ESLint config to eslint.config.mjs

- Removed legacy eslint config
- Bumped patchright to 1.60.0
- Bumped a bunch of other packages to latest stable
- Small tsconfig cleanup

Author: TheNetsky

.eslintrc.js

@@ -0,0 +1,29 @@
+import js from '@eslint/js'
+import tseslint from 'typescript-eslint'
+import prettier from 'eslint-config-prettier'
+import globals from 'globals'
+
+export default tseslint.config(
+    {
+        ignores: ['dist/**', 'node_modules/**', 'diagnostics/**', 'sessions/**', 'scripts/**']
+    },
+    js.configs.recommended,
+    ...tseslint.configs.recommended,
+    {
+        languageOptions: {
+            globals: {
+                ...globals.node,
+                ...globals.es2021
+            },
+            ecmaVersion: 2021,
+            sourceType: 'module'
+        },
+        rules: {
+            '@typescript-eslint/no-explicit-any': ['warn', { fixToUnknown: false }],
+            'prefer-arrow-callback': 'error',
+            'no-empty': 'off'
+        }
+    },
+    // Must come last: disables ESLint rules that conflict with Prettier formatting
+    prettier
+)