add rpdk for typescript

Author: eduardomourar

jest.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  globals: {
+    'ts-jest': {
+      diagnostics: false, // Necessary to avoid typeschecking error in decorators
+    }
+  },
+  testRegex: '\\.test.ts$',
+};