…llet balance

…apV2"

chore: update flash contract deployers to use the latest contract names
chore(tasks): update flash contract deployers to use the latest contract names
refactor(flash-swap): "HifiFlashUniswapV2Underlying" into "UnderlyingFlashUniswapV2"
refactor(flash-swap): "HifiFlashUniswapV2Utils" into "FlashUtils"
test(flash-swap): update tests to use the latest contract names

…ngFlashUniswapV2"

chore(amm,flash-swap,proxy-target): use "old" and "new" prefixes instead of "pre" and "post"
chore(flash-swap): better explain the role of subsidizer in the "uniswapV2Call" function
refactor(errors): "FlashBorrowWrongToken" to "FlashBorrowOtherToken"
refactor(flash-swap): "bot" to "subsidizer"
refactor(flash-swap): "collateral" to "otherToken"
refactor(flash-swap): "collateralRepayAmount" to "repayCollateralAmount"
refactor(flash-swap): delete "collateralAmount" arg in "FlashBorrowCollateral" custom err
refactor(flash-swap): delete superfluous "vars.swapToken" var
refactor(flash-swap): "FlashLiquidateBorrow" event to "FlashSwapCollateralAndLiquidateBorrow"
refactor(flash-swap): "FlashLiquidateBorrow" event to "FlashSwapUnderlyingAndLiquidateBorrow"
refactor(flash-swap): "getCollateralAndUnderlyingAmount" to "getOtherTokenAndUnderlyingAmount"
refactor(flash-swap): "getRepayCollateralAmount" to "getRepayUnderlyingAmount"
refactor(flash-swap): "overshootCollateralAmount" to "shortfallUnderlyingAmount"
refactor(flash-swap): import "IHToken" in "FlashUtils.sol"
test(flash-swap): order vars alphabetically
test(flash-swap): rename "usdcRepayFeeAmount" var to "usdcFeeAmount"

…2" tests

test(flash-swap): import "LIQUIDATION_INCENTIVES" to set liquidation incentives for USDC/ WBTC

…nderlyingAmount"

docs(flash-swap): better formulate the NatSpec comments for "getRepayUnderlyingAmount"
test(flash-swap): add time-bound tests for "UnderlyingFlashUniswapV2"
test(flash-swap): delete price-related tests for "UnderlyingFlashUniswapV2"
test(flash-swap): refer to the "pair contract" as "UniswapV2Pair contract" in descriptors
test(flash-swap): rename "bumpPoolReserves" to "increasePoolReserves"
test(flash-swap): rename "collateralAmount" to "swapCollateralAmount"
test(flash-swap): rename "repayHUsdcAmount" to "repayAmount"
test(flash-swap): rename "underlyingAmount" to "swapUnderlyingAmount"

docs(flash-swap): rewrite the @notice for "liquidateBorrowInternal" function
refactor(flash-swap): emit "profitUnderlyingAmount" and "subsidizedUnderlyingAmont" in event
refactor(flash-swap): rename "shortfallUnderlyingAmount" to "subsidizedUnderlyingAmount"
refactor(flash-swap): rename "surplusUnderlyingAmount" to "profitUnderlyingAmount"
test(flash-swap): erc-20 approve to "MaxUint256"
test(flash-swap): refer to USDC as "underlying" in variable names
test(flash-swap): rename "repayAmount" to "repayHTokenAmount"
test(flash-swap): when the repay underlying amount is less than the seized underlying amount

test(flash-swap): remove redundant debug console logs