[Feature Request] Cloudformation Badge Construct

## :rocket: Feature Request

Dynamic Cloudformation Badge Construct

### General Information

* [ ] :wave: I may be able to implement this feature request

* [ ] :warning: This feature might incur a breaking change

### Description

There is NOTHING more annoying than having to update the CodeBuild / CodePipeline status badge manually on a github project repo README.md. Nothing. JK. It is annoying though.

Wouldn't it be great if there was a CDK construct you could add to your Codebuild / Codepipeline stack and an easy svg url to put on a readme that could make this easier?

### Proposed Solution

Although I don't have a solution for a construct this person actually wrote a CF template that does this: https://github.com/galaxy4public/aws-cloudformation-badges

Because it's a stack level component the CDK version would look something like this:

```typescript
const app = new cdk.App();

const pipeline1 = new PipelineStack(app, 'Pipeline1', env );
const pipeline2 = new PipelineStack(app, 'Pipeline2', env );
const pipeline3 = new PipelineStack(app, 'Pipeline3', env );

const project1 = new ProjectStack(app, 'Project1', env );
const project2 = new ProjectStack(app, 'Project2', env );
const project3 = new ProjectStack(app, 'Project3', env );

// following the parameters from the CF template included in the sample project
new CloudformationBadges(this, 'MyStatusBadge', {
projects: ['project1', 'project2'],
pipelines: ['pipeline1', 'pipeline2'],
})
```

Maybe v1 could incorporate a single project / pipeline.

### Environment

- **CDK CLI Version:**
- **Module Version:**
- **OS:**
- **Language:**

### Other information

Start by reviewing the linked aws-cloudformation-badges template and the proposed TypeScript usage in this issue. Determine the construct’s supported project and pipeline inputs and how it will expose an SVG badge URL; done means a documented construct design and implementation scope that covers the requested status badges.

Written by the indexing model from the issue text.