[C3] Improve bindings support in Svelte template

[jculvey]

What this PR solves / how to test:

• Updates the Svelte template add a hook to populate the platform object with getPlatformProxy in dev.
• Adds a default wrangler.toml file
• Adds a build-cf-types script to generate bindings types via wrangler types.
• Updates the app.d.ts to include types for ctx and cf in addition to the env type described above
• Improves the reliability of parsing a project's tsconfig.json when adding the workers-types entrypoint by switching the implementation to jsonc-parser

Author has addressed the following:

• Tests
  • [ x ] Included
  • Not necessary because:
• Changeset (Changeset guidelines)
  • [ x ] Included
  • Not necessary because:
• Associated docs
  • [ x ] Issue(s)/PR(s): [Pages] Document how to integrate existing SvelteKit app with Cloudflare Pages cloudflare-docs#12897
  • Not necessary because:

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[changeset-bot]

🦋 Changeset detected

Latest commit: 05ee253

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

This PR includes changesets to release 1 package

Name	Type
create-cloudflare	Minor

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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.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-wrangler-5027

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

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/5027/npm-package-wrangler-5027

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-wrangler-5027 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-create-cloudflare-5027 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-cloudflare-kv-asset-handler-5027

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-miniflare-5027

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/7924978234/npm-package-cloudflare-pages-shared-5027

Note that these links will no longer work once the GitHub Actions artifact expires.

---

wrangler@3.28.2 includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20240129.2
workerd	1.20240129.0	1.20240129.0
workerd --version	1.20240129.0	2024-01-29

Please ensure constraints are pinned, and miniflare/workerd minor versions match.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0e74c74) 70.48% compared to head (05ee253) 70.47%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5027      +/-   ##
==========================================
- Coverage   70.48%   70.47%   -0.02%     
==========================================
  Files         297      297              
  Lines       15425    15425              
  Branches     3952     3952              
==========================================
- Hits        10873    10870       -3     
- Misses       4552     4555       +3     

see 1 file with indirect coverage changes

[dario-piotrowicz]

Nit: should we also consider @cloudflare/workers-types/experimental?

[dario-piotrowicz]

Looks good to me 🙂

Besides the failing test and mv