SMC: allow each mutation kernel to have different parameters.

Up to this PR, all chains within SMC share the same parameters. This is a blocker to implementing more sophisticated tuning strategies such as https://arxiv.org/abs/1005.1193 or the pre tuning section in https://arxiv.org/abs/1808.07730

Opening this a a draft PR first, since it involves a change on SMC base.py @junpenglao

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[Y] If I add a new sampler, there is an issue discussing it already;
[Y] We should be able to understand what the PR does from its title only;
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[Y] There are links to all the relevant issues, discussions and PRs;
[Y] The branch is rebased on the latest main commit;
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[ ] The code respects the current naming conventions;
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[no] *If I add a new sampler** I added/updated related examples

blackjax-devs / blackjax