add --yes flag to wrangler init

[JacobMGEvans]

Add --yes with alias --y flag as automatic answer to all prompts and run wrangler init non-interactively.
generated during setup:

• package.json
• TypeScript, which includes tsconfig.json & @cloudflare/workers-types
• Template "hello world" Worker at src/index.ts

resolves #446

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🦋 Changeset detected

Latest commit: f0d304d

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

This PR includes changesets to release 1 package

Name	Type
wrangler	Patch

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[github-actions]

wrangler prerelease is available for testing:

npm install --save-dev https://prerelease-registry.developers.workers.dev/runs/1831806780/wrangler

[petebacondarwin]

I was thinking about this recently and I think that, while having a --yes to force acceptance of all options, can avoid having to interact, it might be better to allow devs to specify exactly what answers they would have chosen via command line args.

For example you might have --create-package-json or --use-typescript etc. What do you think?

[threepointone]

Could do, but let's not do it just yet, let's add more flags if people ask for it. -y is good tho, been wanting it myself.

[petebacondarwin]

Perhaps -y could be an alias for --accept-all? Or is --yes a common enough convention?

[threepointone]

Thing is, if people wanted customisation, they simply wouldn't use -y, and it would be easier to do the steps.

(An optimisation that we can do, is bunch up the npm install commands for the very end. In a future PR.)

[JacobMGEvans]

Perhaps -y could be an alias for --accept-all? Or is --yes a common enough convention?

I would say it is pretty common convention.

[JacobMGEvans]

I think this needs bikeshedding but is non-blocking

[threepointone]

It's just way too long, let's keep it short and bikeshed. Maybe 'Answer "yes" to any prompts.'?

[JacobMGEvans]

It doesn't answer yes for clobbering existing wrangler projects, I am fine with that message though.
'Answer "yes" to any prompts for new projects.' ?

[threepointone]

Tentatively approving with one nit, ship it.