Staking Full-Reward Duration (aka Lockup Period)

[slavakurilyak]

As a contract owner, I want to implement a lockup period for NFT staking (aka stake NFTs at 100% of reward value for up to 365 days) so that I can encourage long-term staking

See humans.ai marketplace which features:

• FIXED/LOCKED: 45% APR for 52 weeks (1 year)
• FIXED/UNLOCKED: 40% APR for 52 weeks (1 year)
• FIXED/LOCKED: 35% at 12 weeks
• FIXED/LOCKED: 35% at 4 weeks
• FLEXIBLE: 30% for any duration