feat: language streams

[rochacbruno]

On marmite.yaml

languages:
  - pt,Português
  - en,English
  - es,Spanish

This data will be used to filter and show the stream /en.html /es.html, and the first of the list is the default so points to index.html

---

The original post in Portuguese ola-mundo.md

---
date: xxxx-xx-xx
slug: ola-mundo
translations:
  - en-hello-world
  - es-hola-mundo
---
# Olá Mundo

English hello-world.md

---
date: xxxx-xx-xx
slug: hello-world
stream: en
---
# Hello World

Spanish hola-mundo.md

---
date: xxxx-xx-xx
slug: hela-mundo
stream: es
---
# Hola Mundo

Those 3 files will generate

/ola-mundo.html -> listed on index
/en-hello-world.md -> listed on /stream-en
/es-hola-mundo.md -> listed on /stream-es

---

On Content there will be a translations field, so html can show links to en and es stream versions.

On the Menu it will be possible to ass stream-en and stream-es with the flags.

[zokaibr]

@rochacbruno would it be possible to use file paths intead of file names at this translations yaml field?

For example, for the page ola-mundo.md, the translation keys could be:

---
date: xxxx-xx-xx
slug: ola-mundo
translations:
  - en/hello-world
  - es/hola-mundo
---

With that, we can look into en and es folders for the hello-world.md and hola-mundo.md files. And following this organization or following the patterm en-hello-world.md would be up to user.

[rochacbruno]

@zokaibr that is possible on the input folder, the generated page will be flat en-hello-world.md but the input folder can be better organized.

[bgruszka]

can I help you somehow with implementing this? :)