Add VIP: VRF implementation on VechainThor

[akanoce]

Hi all, This VIP aims to see a VRF (Verifiable Random Function) implementation both at protocol or built-in level. VRF would open the doors for a whole new set of applications and use cases on vechain, also unlocking new reward mechanism for VeBetterDAO apps

Some of the use cases to be unlocked with a VRF:

• Gaming Applications
  • Lotteries: Fair and transparent random selection of winners.
  • Arcade Games: Securely powering random spins, rolls, or draws.
• NFT Ecosystem
  • Randomized trait assignment during minting.
  • Introducing unpredictability to NFT drops or airdrops.
• Gamified Platforms (e.g., VeBetterDAO)
  • Engaging challenges with randomly assigned tasks, multipliers, or rewards.
  • Transparent reward distribution in competitions or leaderboards. -Governance Mechanisms
  • Fairly selecting committee members or resolving disputes via random processes.