update eslint configuration for pdf-converter-client

packages/pdf-converter-client/.eslintignore

@@ -1,3 +0,0 @@
-src/index.ts
-dist/index.d.ts
-dist/index.js

packages/pdf-converter-client/.eslintrc.cjs

@@ -0,0 +1,11 @@
+/**
+ * @type {import('eslint').Linter.Config}
+ */
+module.exports = {
+  extends: '../../.eslintrc.js',
+  ignorePatterns: [
+    'src/index.ts',
+    'dist/index.d.ts',
+    'dist/index.js',
+  ],
+};