Feat: Move staking pool metadata

[shark0der]

Context

Staking pools' titles and descriptions are stored on ipfs and the contract only emits an event with the ipfs hash. Event fetching takes a looooooooooong time and we want to optimize this.

Changes proposed in this pull request

This PR moves the ipfs hashes from events to storage. The contract choice (StakingProducts instead of StakingPool) is due to the extremly limited space in StakingPool.

Test plan

Added new unit tests and cleaned up staking pool unit tests.

Checklist

• Rebased the base branch
• Attached corresponding Github issue
• Prefixed the name with the type of change (i.e. feat, chore, test)
• Performed a self-review of my own code
• Followed the style guidelines of this project
• Made corresponding changes to the documentation
• Didn't generate new warnings
• Didn't generate failures on existing tests
• Added tests that prove my fix is effective or that my feature works

Review

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• 🍰 = Nice to have but not essential.
• 💡 = Suggestion or a comment based on personal opinion
• 🔨 = I believe this should be changed.
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• 🚀 = Feedback

[MilGard91]

LGTM

[rackstar]

marking as draft so it won't be accidentally merged while on audit