add kwargs to simulation context

[LuisSanchez25]

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What does the code in this PR do / what does it improve?

Add kwargs argument to the offline simulation context.

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Can you give a minimal working example (or illustrate with a figure)?

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• Update the docstring(s)
• Update the documentation
• Tests to check the (new) code is working as desired.
• Does it solve one of the open issues on github?

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• Until the automated tests pass, please mark the PR as a draft.
• On the XENONnT fork we test with database access, on private forks there is no database access for security considerations.

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[coveralls]

coverage: 91.76% (-0.01%) from 91.77%
when pulling c4e71ed on kwargs_sim_context
into c532353 on master.

[shenyangshi]

Looks good to me, thanks :)

[dachengx]

Thanks @LuisSanchez25 .