Add 'console_script' executables for basic document/AST output

[chrisjsewell]

Especially for quick demonstration purposes, without having to hook in to the whole sphinx infastructure. For example myst-to-ast path/to/doc.md would convert:

# header

Some **bold** text

to

<document>
    <section>
        header
    <paragraph>
        Some
        <emphasis>
            bold
        text

[choldgraf]

This would basically just be:

from myst_parser.docutils_renderer import DocutilsRenderer
from myst_parser.block_tokens import Document


renderer = DocutilsRenderer()

ast = renderer.render(Document("# Hi"))

print(ast.pformat())

right?

Another thought - it would be really cool if we leveraged some interactivity to make it easier to wrap your head around XML. I realized that with a little lightweight library, you can convert XML to an OrderedDict. This lets you use the IPython JSON display library like so:

from IPython.display import JSON
import xmltodict

xmld = xmltodict.parse(xml)
JSON(xmld)

And you can do stuff like:

I wonder if that could be a little helper utility in Myst to wrap the above process.

Now I just need to figure out how to get the docutils AST to output actual XML instead of pseudo XML that pformat makes :-P @chrisjsewell any idea on that?

[chrisjsewell]

output actual XML

documetnt.asdom()?

[choldgraf]

I did a hacky take at this in #37

[chrisjsewell]

This is now available as myst-docutils-psuedoxml