Support for project files written by Poetry

[ghisvail]

Using sphinx-pyproject on a project setup with Poetry results in the following error:

dom_toml.parser.BadConfigError: No 'project' table found in .../pyproject.toml

Indeed the project metadata are stored in the [tool.poetry] table, instead of project.

I wonder whether it would be possible to support Poetry's setup by providing a project_table optional parameter defaulting to project which Poetry users could override to tool.poetry?

[alexanderustinov]

It would be nice to have support for this, but it would not be sufficient to pass different table name - handling of authors differ:

[project]
name = "example"
version = "0.1.0"
authors = [
    {name = "Your Name", email = "you@domain.com"},
]
description = "some description" 

[tool.poetry]
name = "example"
version = "0.1.0"
authors = [
    "Your Name <you@domain.com>",
]
description = "some description" 

Relevant poetry issue python-poetry/poetry#3332
I think it's better to wait for changes in poetry and duplicate tables in pyproject.toml as a workaround.

[domdfcoding]

I'll happily accept a PR adding support for poetry support, if poetry supporting PEP 621 is a way off.

What's required is a different version of the ProjectParser class that parses from [tool.poetry] instead of [project], and a bit of logic in SphinxConfig.__init__ to decide on which table and class to use.