Update starter templates documentation to reflect current available templates

[Copilot]

Description

The starter templates documentation listed outdated templates (todo-ts, embeddings) that are no longer available in the CLI. The docs now accurately reflect the current available templates: basic, minimal, saas, and ai-generated.

Changes

• Removed: todo-ts and embeddings templates (no longer exist)
• Added: minimal template documentation (was missing)
• Updated: CLI example output to show correct template list and descriptions matching source code
• Updated: Starting instructions in example (wasp db migrate-dev instead of wasp db start)

Files Modified

• web/docs/project/starter-templates.md
• web/versioned_docs/version-0.19.0/project/starter-templates.md

Type of change

• 🔧 Just code/docs improvement
• 🐞 Bug fix
• 🚀 New/improved feature
• 💥 Breaking change

Checklist

• I tested my change in a Wasp app to verify that it works as intended.

• 🧪 Tests and apps:

  • I added unit tests for my change.
  • (if you fixed a bug) I added a regression test for the bug I fixed.
  • (if you added/updated a feature) I added/updated e2e tests in examples/kitchen-sink/e2e-tests.
  • (if you added/updated a feature) I updated the starter templates in waspc/data/Cli/templates, as needed.
  • (if you added/updated a feature) I updated the example apps in examples/, as needed.
    • (if you updated examples/tutorials) I updated the tutorial in the docs (and vice versa).

• 📜 Documentation:

  • (if you added/updated a feature) I added/updated the documentation in web/docs/.

• 🆕 Changelog: (if change is more than just code/docs improvement)

  • I updated waspc/ChangeLog.md with a user-friendly description of the change.
  • (if you did a breaking change) I added a step to the current migration guide in web/docs/migration-guides/.
  • I bumped the version in waspc/waspc.cabal to reflect the changes I introduced.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Starter Templates docs are out of date</issue_title>
<issue_description>https://wasp.sh/docs/project/starter-templates shows outdated starter templates (e.g. todo-ts)

Available starter templates are: basic, minimal, saas, ai-generated.
````</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Starter Templates docs are out of date #3506

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