[FEATURE]: Staking Facet

[0xhaz]

Description

This feature proposes adding a StakingFacet to the Compose Diamond standard library. The facet enables staking of ERC-20, ERC-721, and ERC-1155 tokens with support for:

• Base APR reward calculation with optional decay
• Customizable cooldown period for unstaking
• Rewards paid in a configurable ERC-20 token
• Compatible with AccessControlFacet or OwnerFacet for admin gating

Value

This feature enables developers to easily integrate staking mechanics into any Compose-based diamond - without needing to write staking logic
Benefits include:

• Reusability: Designed for diamond composition and deploy-once reuse
• Multi-standard support: Unified interface for staking ERC20, ERC721, and ERC1155
• Flexibility: Reward parameters and token support are configurable via module
• Composability: Can integrate cleanly with AccessControlFacet or AccessControlPausableFacet

[mudgen]

@0xhaz Sound good. Go for it.

Also, be aware that we are working an ERC4626 implementation: #240

[mudgen]

@0xhaz Please make sure that you follow the documentation on contributions and design closely: https://compose.diamonds/docs

[0xhaz]

@0xhaz Please make sure that you follow the documentation on contributions and design closely: https://compose.diamonds/docs

Noted. Will ask for any clarification

[mudgen]

Implementation here: #254