[hedgey-delegate] adds strategy for hedgey vesting contracts (#1155 )

* feat: adds hedgey delegate with multiplier strategy

* chore: updating README

* Update src/strategies/hedgey-delegate/index.ts

Co-authored-by: Chaitanya <yourchaitu@gmail.com>

* Update src/strategies/hedgey-delegate/index.ts

Co-authored-by: Chaitanya <yourchaitu@gmail.com>

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Co-authored-by: Chaitanya <yourchaitu@gmail.com>

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