[MEX-672] user estimated weekly rewards

[claudiulataretu]

Reasoning

• estimated weekly boosted rewards will be used for energy calculator

Proposed Changes

• added new field for BoostedRewardsModel: estimatedWeeklyRewards
• added compute methods in farm and staking compute service to calculate estimated weekly rewards based on current week
• added compute method in fees collector to calculate last week rewards in USD value

How to test

• query should return estimated weekly rewards for user from a single staking contract

query StakingBoostedRewards {
    getStakingBoostedRewardsBatch(
        stakingAddresses: [<staking_address>]
    ) {
        estimatedWeeklyRewards(
            additionalUserEnergy: "0"
        )
    }
}

• query should return estimated weekly rewards for user from a single farm contract

query FarmBoostedRewards {
    getFarmBoostedRewardsBatch(
        farmsAddresses: []
    ) {
        estimatedWeeklyRewards(
            additionalUserEnergy: "0"
        )
    }
}

• query should return last weekly rewards in USD for user from a single farm contract

query UserFeesCollector {
    userFeesCollector {
        lastWeekRewardsUSD(
            additionalUserEnergy: "0"
        )
    }
}