Add Certora formal verification for GhoStewardV2 #58

Job	Run time
verify (verifyGhoToken.conf --rule length_leq_max_uint160 inv_balanceOf_leq_totalSupply total_sup...	5m 40s
verify (verifyGhoAToken.conf --rule noMint noBurn noTransfer transferUnderlyingToCantExceedCapaci...	6m 4s
verify (verifyGhoDiscountRateStrategy.conf --rule equivalenceOfWadMulCVLAndWadMulSol maxDiscountF...	3m 58s
verify (verifyFlashMinter.conf --rule balanceOfFlashMinterGrows integrityOfTreasurySet integrityO...	6m 54s
verify (verifyGhoVariableDebtToken.conf --rule user_index_after_mint user_index_ge_one_ray nonzer...	5m 17s
verify (verifyGhoVariableDebtToken.conf --rule accumulated_interest_increase_after_mint)	9m 51s
verify (verifyGhoVariableDebtToken.conf --rule userCantNullifyItsDebt)	12m 0s
verify (verifyGhoVariableDebtToken.conf --rule discountCantExceedDiscountRate)	5m 55s
verify (verifyGhoVariableDebtToken.conf --rule onlyMintForUserCanIncreaseUsersBalance)	7m 8s
verify (verifyGhoVariableDebtToken.conf --rule discountCantExceed100Percent)	4m 59s
verify (verifyGhoVariableDebtToken.conf --rule disallowedFunctionalities nonMintFunctionCantIncre...	8m 27s
verify (verifyGhoVariableDebtToken_summarized.conf --rule accrueAlwaysCalleldBeforeRefresh)	4m 57s
verify (verifyGhoVariableDebtTokenInternal.conf)	4m 52s
verify (verifyGhoVariableDebtToken-rayMulDiv-summarization.conf)	6m 18s
	1h 32m 20s

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