Documenting the new project manifest format

[bjones1]

In the PreTeXt docs, what about using a table to illustrate the new project manifest format for project.ptx? I don't love the styling here in Github, but hoping that in PreTeXt we can make the rows less obvious?

Project manifest contents	Explanation
<?xml version="1.0" encoding="utf-8"?>	All project manifest files must begins with this XML prolog.
<project	Next, the project tag specifies values which apply to the entire project, as detailed below.
ptx-version="2"	The ptx-version="2" attribute denotes this as the current version of the project manifest; without this, the CLI will assume the legacy format.
output-dir="build/here"	The output-dir provides a path, relative to the project directory, which is prepended to any target's output_dir. The same pattern applies to several of the next attributes.
publication="dont-touch"	Likewise, the publication provides a path, relative to the project directory, prepended to any target's publication.
site="build/staging"	TODO
source="my_ptx_source"	TODO
xsl="customizations"	TODO
>	TODO
<server name="sage" url="http://example2.com"/>	TODO
<targets>	TODO
<target	TODO
name="web"	TODO
format="html"	TODO
output-dir="web"	TODO
output-filename="xxx"	TODO
publication="foo.ptx"	TODO
source="book.ptx"	TODO
site=""	TODO
xsl="silly.xsl"	TODO
>	TODO
<stringparams foo="bar" baz="goo" />	TODO
</targets>	TODO
</project>	TODO

Done.