Data Sources

[sergiodxa]

Is your feature request related to a problem? Please describe.
Contentz should support different data sources than the file system. It could fetch data from an API replying with Markdown and the metadata and Contentz should parse it as normal MDX and render the HTML.

Describe the solution you'd like
When reading the files from the file system it should also get all the articles in some supported API based on the data in config.yml, then treat the Markdown as any normal MDX file.

Describe alternatives you've considered
Create a plugins system to add support to any amount of data sources.

Additional context
Check how Gatsby support it.