Support for Conan 2 setups

[nullbytepl]

No description provided.

[pjarosik]

Please simplify that to:

def is_version_at_least(minimum_version):
    version_parts = [int(part) for part in version.__version__.split('.')]
    minimum_parts = [int(part) for part in minimum_version.split('.')]
    return version_parts >= minimum_parts

or even:

from packaging import version

def is_version_at_least(minimum_version):
    return version.parse(version.__version__) >= version.parse(minimum_version)

[nullbytepl]

@pjarosik RFC: Since this is a massive change, maybe we should bump the version to 1.0.0 after this, and perhaps even move from devops.py being the file being read to devops2.py or something, so we could show an user-readable error by simply putting something in devops.py, then put the actual config in devops2.py. After that, we could use is_version_at_least or similar to check for updates beyond that point.

I have a few ideas of useful stuff for a hypothetical 1.0.0, if we could force everyone to upgrade.