[3 / 5] Move crypto checks in the approval-distribution

[alexggh]

Prerequisite

This is part of the work to further optimize the approval subsystems, if you want to understand the full context start with reading #4849 (comment),

Description

This PR contain changes, so that the crypto checks are performed by the approval-distribution subsystem instead of the approval-voting one. The benefit for these, is twofold:

1. Approval-distribution won't have to wait every single time for the approval-voting to finish its job, so the work gets to be pipelined between approval-distribution and approval-voting.

2. By running in parallel multiple instances of approval-distribution as described here [5 / 5] Introduce approval-voting-parallel #4849 (comment), this significant body of work gets to run in parallel.

Changes:

1. When approval-voting send ApprovalDistributionMessage::NewBlocks it needs to pass the core_index and candidate_hash of the candidates.
2. ApprovalDistribution needs to use RuntimeInfo to be able to fetch the SessionInfo from the runtime.
3. Move approval-voting logic that checks VRF assignment into approval-distribution
4. Move approval-voting logic that checks vote is correctly signed into approval-distribution
5. Plumb approval-distribution and approval-voting tests to support the new logic.

Benefits

Even without parallelisation the gains are significant, for example on my machine if we run approval subsystem bench for 500 validators and 100 cores and trigger all 89 tranches of assignments and approvals, the system won't fall behind anymore because of late processing of messages.

Before change
Chain selection approved  after 11500 ms hash=0x0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a

After change

Chain selection approved  after 5500 ms hash=0x0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a

TODO:

• Run on versi.
• Update parachain host documentation.

[paritytech-cicd-pr]

The CI pipeline was cancelled due to failure one of the required jobs.
Job name: cargo-clippy
Logs: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/6635844

[sandreim]

Excellent work @alexggh 🚀 . Left some comments and suggestions.

[alexggh]

PR ran in versi for a few days without any issues!

[sandreim]

Anything preventing us from merging it ?

[ordian]

This optimization makes sense and great work 🚀
Left a few minor remarks

[alexggh]

Anything preventing us from merging it ?

The only thing missing now is a security audit, @patriciobcs any thoughts when this PR will get its turn ?

[patriciobcs]

Anything preventing us from merging it ?

The only thing missing now is a security audit, @patriciobcs any thoughts when this PR will get its turn ?

Will be done by 13th September.