fix(py/tools): make sure description is the first arg of tool decorator

[pavelgj]

this should still be valid

    @ai.tool('Use it to get the weather')
    def get_weather(input:WeatherToolInput) -> str:
        return f'Weather in {input.location} is 23°'

Checklist (if applicable):

• PR title is following https://www.conventionalcommits.org/en/v1.0.0/
• Tested (manually, unit tested, etc.)
• Docs updated (updated docs or a docs bug required)

[yesudeep]

are you sure you want that? the description arg is very unlikely to be used since pythonistas would prefer docstrings but the name arg will very likely be used so positionally it makes sense to use name before description... the arg would likely be used only for overrides and explicitly writing description='foo' emphasizes that... it's also consistent with other method signatures. wdyt?

[pavelgj]

yeah, maybe it's fine as is... I was just following the docs that we published and things were broken... but you updated docs sources, so just need to republish.