feat: add new contract to support merkl reward claiming #83

Job	Run time
verify (changeInContractBalanceShouldCauseAccrual.conf)	13m 27s
verify (positiveSupply_imply_positiveAssets-deposit.conf)	11m 13s
verify (positiveSupply_imply_positiveAssets-mint.conf)	11m 37s
verify (lastVaultBalance_LEQ_ATokenBalThis.conf)	8m 1s
verify (erc4626-previewOPERATIONS.conf)	11m 3s
verify (fees_LEQ_ATokenBal.conf)	20m 19s
verify (positiveSupply_imply_positiveAssets-other.conf)	12m 26s
verify (positiveSupply_imply_positiveAssets-withdraw.conf)	11m 45s
verify (accrueYieldCheck.conf)	10m 52s
verify (rayMul_rayDiv_mulDiv_properties.conf)	7m 5s
verify (totalSupply_EQ_sumAllBal.conf)	8m 31s
verify (positiveSupply_imply_positiveAssets-redeem.conf)	11m 31s
	2h 17m 50s

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