Added hybrid inflation model to Astar

[PierreOssun]

Pull Request Summary

Adds Tokenomics 2.0 Phase 2: Hybrid inflation model to Astar.

Three requirements should be met:

• collators should get 3.2% of yearly inflation
• treasury should get 5% of yearly inflation
• stakers and dApps gets the same amount (in absolute value)

The (today) total issuance of ASTR is 8304517045391557672991818108 so 7% is 581316193177409037109427267 ASTR inflation per year. yearly inflation = 581316193177409037109427267

Reward per block is:

Collators: inflation * 0.032 / (7200 * 365) / 10^18 = 7.078431 ASTR/Block calc

Treasury: inflation * 0.05 / (7200 * 365) / 10^18 = 11.060049 ASTR/Block calc

dApps and stakers get the same as today (based on current block reward of 253.08):
dAppRewards = 15.78% * 253.08 = 39.936024 ASTR
baseStakerPercent = 21.05% * 253.08 = 53.27334 ASTR
adjustablePercent = 47.36% * 253.08 = 119.858688 ASTR

so total (max) reward per block (sum of all): 231.206532 ASTR

And we use the blockReward distribution to ensure the three requirements: (and calculate them from the reward per block)

{
  // 11.060049 / 231.206532 = 0.04783623
  treasuryPercent: 4.78%
  // 53.27334 / 231.206532 = 0.23041451
  baseStakerPercent: 23.04%
  // 39.936024 / 231.206532 = 0.17272878
  dappsPercent: 17.27%
  // 7.078431 /  231.206532 = 0.03061518
  collatorsPercent: 3.06%
  // 119.858688 / 231.206532 = 0.51840528
  adjustablePercent: 51.84%
  idealDappsStakingTvl: 60.00%
}

Check list

• Removed old pallet-rewards
• Removed Shiden migration + Added Astar migration
• Integrate new pallet + updated block rewards

[github-actions]

Package	Line Rate	Branch Rate	Health
pallets/dynamic-evm-base-fee/src	81%	0%	✔
pallets/collator-selection/src	69%	0%	➖
precompiles/sr25519/src	79%	0%	➖
chain-extensions/xvm/src	0%	0%	❌
precompiles/assets-erc20/src	77%	0%	➖
precompiles/utils/macro/src	0%	0%	❌
precompiles/substrate-ecdsa/src	78%	0%	➖
precompiles/xcm/src	75%	0%	➖
chain-extensions/types/dapps-staking/src	0%	0%	❌
precompiles/utils/src/testing	38%	0%	❌
pallets/xc-asset-config/src	53%	0%	➖
chain-extensions/types/assets/src	0%	0%	❌
pallets/dapps-staking/src	81%	0%	✔
pallets/unified-accounts/src	84%	0%	✔
pallets/xvm/src	40%	0%	❌
precompiles/utils/src	55%	0%	➖
chain-extensions/dapps-staking/src	0%	0%	❌
chain-extensions/pallet-assets/src	0%	0%	❌
chain-extensions/types/xvm/src	0%	0%	❌
precompiles/unified-accounts/src	100%	0%	✔
pallets/block-rewards-hybrid/src	87%	0%	✔
pallets/dapps-staking/src/pallet	85%	0%	✔
primitives/src/xcm	66%	0%	➖
chain-extensions/unified-accounts/src	0%	0%	❌
primitives/src	65%	0%	➖
precompiles/dapps-staking/src	93%	0%	✔
chain-extensions/types/unified-accounts/src	0%	0%	❌
pallets/contracts-migration/src	0%	0%	❌
pallets/ethereum-checked/src	48%	0%	❌
precompiles/xvm/src	75%	0%	➖
Summary	57% (2251 / 3979)	0% (0 / 0)	➖

Minimum allowed line rate is 50%

[Dinonard]

LGTM!

Numbers look good!

[ashutoshvarma]

LGTM!
I didn't check the calculations though

[shaunxw]

Verified the numbers and they look good to me. Just one small question.