feat: teach unstable_dev about the internet (remote mode)

[rozenmd]

How to review this PR:

• Start in fixtures/local-mode-tests/tests/unstableDev.test.ts, where we call unstable_dev with local: false
• We then modify packages/wrangler/src/api/dev.ts, and make it possible to configure the local setting in unstable_dev
• We then pass that down to packages/wrangler/src/dev.tsx, in startApiDev
• We then move to packages/wrangler/src/dev/start-server.ts, where we pass local to startDevServer, which uses it to decide whether to start a local, or remote server
• Remote server is implemented in packages/wrangler/src/dev/remote.tsx
• Finally, we define a proxy server here: packages/wrangler/src/proxy.ts, which gets called by startRemoteServer above

Closes #1780

[changeset-bot]

🦋 Changeset detected

Latest commit: b62df56

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]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/runs/3159311155/npm-package-wrangler-1967

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/prs/1967/npm-package-wrangler-1967

Or you can use npx with this latest build directly:

npx https://prerelease-registry.developers.workers.dev/runs/3159311155/npm-package-wrangler-1967 dev path/to/script.js

Additional artifacts:

npm install https://prerelease-registry.developers.workers.dev/runs/3159311155/npm-package-cloudflare-pages-shared-1967

[rozenmd]

This is ready for review, I just need a functioning API key + account ID to make the tests pass.

[codecov]

Codecov Report

Merging #1967 (b62df56) into main (15ca338) will decrease coverage by 2.18%.
The diff coverage is 10.11%.

@@            Coverage Diff             @@
##             main    #1967      +/-   ##
==========================================
- Coverage   74.91%   72.73%   -2.19%     
==========================================
  Files         116      118       +2     
  Lines        7962     8230     +268     
  Branches     2079     2160      +81     
==========================================
+ Hits         5965     5986      +21     
- Misses       1997     2244     +247     

Impacted Files	Coverage Δ
packages/wrangler/src/api/dev.ts	69.23% <ø> (ø)
packages/wrangler/src/proxy.ts	14.46% <0.00%> (-1.82%)	⬇️
packages/wrangler/src/dev/remote.tsx	6.70% <2.12%> (ø)
packages/wrangler/src/dev/start-server.ts	66.66% <50.00%> (-2.84%)	⬇️
packages/wrangler/src/dev.tsx	85.84% <100.00%> (+0.06%)	⬆️
packages/wrangler/src/create-worker-preview.ts	8.95% <0.00%> (ø)
...ackages/wrangler/src/__tests__/helpers/mock-bin.ts	100.00% <0.00%> (+5.26%)	⬆️

[JacobMGEvans]

Looks great! I am excited to see this in action in the wild 😄