docs(new-tutorial): next steps unit

[aliemir]

Added the next steps unit including:

• inferencer step,
• cli step, (content only)
• devtools step (content only)

Currently missing videos about devtools.

Bugs / Features

• [x] Related issue(s) linked
• [x] Tests for the changes have been added
• [x] Docs have been added / updated
• [x] Changesets have been added https://refine.dev/docs/guides-concepts/contributing/#creating-a-changeset

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 49ad7b1fe973c7be9f051218021f8ff310dea693

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[nx-cloud[bot]]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit 49ad7b1fe973c7be9f051218021f8ff310dea693. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 1 target

• lerna run test --stream --scope @refinedev/* --scope create-refine-app

---

Sent with 💌 from NxCloud.