Create epic.yml

[LazyYuuki]

Describe Your Changes

• Create a way to create new epic

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[!IMPORTANT] Add epic.yml template for creating new epics with mandatory fields for goal and tasklist.

• New Feature:
  • Adds epic.yml in .github/ISSUE_TEMPLATE/ to create new epics.
  • Template includes fields for Goal, Tasklist, and Out of scope.
  • Fields Goal and Tasklist are mandatory.
• Metadata:
  • Sets type to Epic and associates with project menloresearch/30.

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