FlashMintLeveraged (#143)

* feat: adds IVault Interface for balancer vault

* feat: initial FlashMintLeveraged building on exchangeIssuanceLeveraged

* feat: adds FlashMintLeveraged related constants and utilities.

* test: added flashMintLeveraged integration test based on the exchangeIssuanceLeveragedIntegration test.

* feat: initial changes to test cases to cover behaviour changes to the FlashMintContract.

* style: refactored names to be more consistent

* test: unified interface for balancer/ dex adapter.

* flash loan from balancer instead of aave

* add pertinent addresses to constants

* wip test trying to lever up

* test: updates to test issuing icreth using uniswapv3.

adds relevant addresses to constants.
removes balancer specific entrypoint to contract.

* support quote on redeem and test both interfaces to be similar

* fix util

* revert changes to the interface on the contract.

* update test to revert back to testing the exchangeissuance interface.

* guard receive flashloan from a grief attack.

* update docs.

* fix: update deployment args to ensure no stack too deep errors in coverage testing.

* update doc string

* remove unused function.

* strict equality is better equality.

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Co-authored-by: snakepoison <[email protected]>