feat: accept configuration file ⚙️

[AurelienLoyer]

• Add documentation
• Now we are able to use configuration for the lab generation 👍

In a near futur we can also this file to pass some news configurations like

• codelab main color
• end link url
• ....

Configuration

Values

Name	Values	Description
base	""	The base url of bower_components and elements

Examples

From shell

npx @dxdeveloperexperience/codelab-generator ./index.adoc ./target path/to/config.json

npx @dxdeveloperexperience/codelab-generator ./index.md ./target path/to/config.json

the config.json

{
  "base": "baseurl/test/"
}

or

const codelab = require("@dxdeveloperexperience/codelab-generator");

// ...
await codelab(labTmpFile, labsOutputDir, { base: "" });

Result, it will convert template
from:

<script src="{{ &base }}bower_components/webcomponentsjs/webcomponents-lite.js"></script>
<link rel="import" href="{{ &base }}elements/codelab.html" />

to:

<script src="baseurl/test/bower_components/webcomponentsjs/webcomponents-lite.js"></script>
<link rel="import" href="baseurl/test/elements/codelab.html" />