feat: add Navigation and OData V4 tutorials, align all packages

[petermuessig]

What this PR does

Brings two new tutorials into the monorepo — Navigation and Routing (17 steps) and OData V4 (11 steps) — and reworks all four tutorials onto a single template so they share the same toolchain, layout, namespace, and documentation conventions.

After this PR the repo ships 4 tutorials with 69 step workspaces, all under the ui5.tutorial.<name>.stepNN naming.

Tutorials

packages/navigation/ (new)

• 17 steps imported from the OpenUI5 demokit, restructured into the standard steps/NN/ layout.
• App namespace renamed sap.ui.demo.nav → ui5.tutorial.navigation across manifests, TS imports, JSDoc @namespace, XML controllerName, tsconfig paths, and HTML resource-roots.
• Dev dependencies switched to the walkthrough set (@types/openui5, ui5-middleware-serveframework, ui5-tooling-transpile).
• Per-step package.json names → ui5.tutorial.navigation.stepNN; ui5.yaml metadata aligned.

packages/odatav4/ (new)

• 11 steps imported from the same demokit source.
• Restructured solutions/ → steps/, root-level markdown moved into per-step README.md, shared images/ split into per-step assets/.
• JS sources fully converted to TypeScript ES modules: Component, App.controller, model/models, initMockServer, the ~800-line sinon-based mock server, plus the view XML.
• Hungarian variable prefixes stripped (oModel → model, aMatches → matches, sUrl → url, …) to match the project's TS style — confirmed against packages/walkthrough/.
• App namespace standardised to ui5.tutorial.odatav4.

Namespace alignment of the existing tutorials

• packages/walkthrough/ — renamed ui5.walkthrough → ui5.tutorial.walkthrough across ~630 files (manifests, TS imports + @namespace, XML controllerName + xmlns, tsconfig paths, HTML resource-roots, every README code snippet, step package.json names).
• packages/quickstart/ — renamed ui5.quickstart → ui5.tutorial.quickstart with the same shape across 27 files; ui5.yaml metadata.name quickstart-tutorial → ui5.tutorial.quickstart.

Documentation

• Per-tutorial overview READMEs (packages/{navigation,odatav4}/README.md) now mirror packages/walkthrough/README.md: each step bullet has an inline 🔗 Live Preview link plus paired <details class="ts-only"> / <details class="js-only"> 📥 Download Solution blocks.
• Step READMEs ship with paired ```ts / ```js code blocks so the Jekyll code-couple toggle renders both flavours. The JS half is generated from the build's sanitised *-dbg.js output where applicable.
• Folder-structure images replaced with fenced ```text ASCII trees (using .?s placeholders so the toggle flips the extensions); images deleted from per-step assets/.
• All callout syntaxes (GitHub-flavoured alerts > [!NOTE] plus walkthrough's emoji blockquotes > 📝 **Note:** <br>) normalised to the :note: / :tip: / :info: / :caution: / :warning: shorthand mandated by _/AUTOMATE.md — 76 callouts converted.
• Step-level "view and download all files at [demokit]" links retargeted to the published https://ui5.github.io/tutorials/... URLs so they resolve against the local dist/ via the dev server.
• License year bumped 2025 → 2026 across all overview READMEs; ## License sections added to the new navigation and odatav4 overviews.

Tooling

• tools/dev-server/server.js:
  • Mount dist/ under /dist/... so npm start serves the locally-built apps and ZIPs.
  • Rewrite the published https://ui5.github.io/tutorials/... URLs in rendered markdown to local /dist/... paths for the four known tutorial slugs (walkthrough, quickstart, navigation, odatav4).
  • Friendly hint page when an artifact is missing.
• README.md: document the npm install && npm run build && npm start workflow.

Verification

• ✅ npm install succeeds and registers all 69 workspaces under the new ui5.tutorial.* namespace.
• ✅ npm run typecheck -ws --if-present → exit 0.
• ✅ npm run build → exit 0. Produces dist/<tutorial>/build/NN/ apps, <tutorial>-step-NN.zip and <tutorial>-step-NN-js.zip downloads, and the rewritten dist/index.md overview for each tutorial.
• ✅ index-cdn.html present for every webapp that bootstraps SAPUI5 (68 of 69 — walkthrough step 01 is the bare HTML "Hello World" and intentionally has none).
• ✅ Dev-server smoke test: Live Preview links from the overview README resolve to /dist/<tutorial>/build/NN/index-cdn.html with HTTP 200.

Stats

1363 files changed: 49,009 insertions, 1,320 deletions.

JIRA: FIORITECHP1-35769

[flovogt]

some files have no empty last lines. I prefer to align this.

[flovogt]

Let's use manifest v2

[flovogt]

Let's use specVersion '4.0'