Add prepare script so GitHub installs build dist

**Metr Tracking Issue**

**Category**: trivial
**Commits**: 1
**Lines changed**: 1 (+1/-0)
**Time span**: 0 hours

**PRs**:
- #5 - Add prepare script so GitHub installs build dist

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<summary>Commit details</summary>

- `6bb09f4` build: add prepare script for git installs (#5) (+1/-0)

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