docs: add CI, Codecov, npm, and license badges to README (fixes #49)

README.md

@@ -1,5 +1,10 @@
 # AWS CDK Secure Constructs
 
+[![CI](https://github.com/alphacrack/aws-cdk-secure-constructs/actions/workflows/ci.yml/badge.svg)](https://github.com/alphacrack/aws-cdk-secure-constructs/actions/workflows/ci.yml)
+[![Codecov](https://codecov.io/gh/alphacrack/aws-cdk-secure-constructs/branch/main/graph/badge.svg)](https://codecov.io/gh/alphacrack/aws-cdk-secure-constructs)
+[![npm version](https://img.shields.io/npm/v/aws-cdk-secure-constructs.svg)](https://www.npmjs.com/package/aws-cdk-secure-constructs)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
+
 Secure-by-default AWS CDK constructs with [CDK property injection](https://docs.aws.amazon.com/cdk/v2/guide/blueprints.html) support.
 
 **Status:** Early stage. Only **S3 (`SecureBucket`)** is implemented today. Requires `aws-cdk-lib` >= 2.196.0.

examples/basic-usage.ts

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 #!/usr/bin/env node
-import 'source-map-support/register';
 import { App, Stack } from 'aws-cdk-lib';
 
 import { SecureBucket, SecurityLevel } from '../src';

examples/blueprints-usage.ts

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 #!/usr/bin/env node
-import 'source-map-support/register';
 import { App, Stack, PropertyInjectors } from 'aws-cdk-lib';
 import { Bucket } from 'aws-cdk-lib/aws-s3';