fix: forward exit code of external package commands

[rChaoz]

Closes #411

[changeset-bot]

🦋 Changeset detected

Latest commit: f244c74

The changes in this PR will be included in the next version bump.

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[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/sveltejs/cli/sv@412

npm i https://pkg.pr.new/sveltejs/cli/svelte-migrate@412

commit: f244c74

[benmccann]

We should check all the commands and add it anywhere it is missing such as

cli/packages/cli/commands/migrate.ts

Line 34 in 6536cbf

} catch {}

[rChaoz]

@benmccann should be all good

[benmccann]

Thank you!!