Make `Hash`, `Hasher` and `BuildHasher` `#[const_trait]` and make `Sip` const `Hasher`#104060

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ink-feather-org:const_hash

Nov 10, 2022

Commits on Nov 4, 2022

Commits on Nov 6, 2022

Commits on Nov 7, 2022

Removed unnecessary Trait bound
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Commits on Nov 8, 2022

Test const `Hash`, fix nits
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