docs: add docs on param module deprecation

[tac0turtle]

Description

Closes: #12496

Update docs on param module deprecation.

Open Todos:

• consensus params solution
• Deprecation of the transient store? We will hold off on deprecating the transient store for another PR

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Author Checklist

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• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
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• reviewed API design and naming
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[alexanderbez]

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