Update tutorial to v4 (#58)

* Remove top level folders, keep only the v4 version

* Update READMEs

* Use modern template, including version catalog, and bump dependency versions

* Update CI job

* Use version in version catalog

* Bump to 4.0.0

Author: BoD

.github/workflows/pr.yml

@@ -18,15 +18,7 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: 17
-      - name: Build current tutorial
-        working-directory: ./compose/final
-        run: |
-          ./gradlew assembleDebug
-      - name: Build legacy tutorial
-        working-directory: ./views/final
-        run: |
-          ./gradlew assembleDebug
-      - name: Build v4 tutorial
-        working-directory: ./v4/final
+      - name: Build tutorial
+        working-directory: ./final
         run: |
           ./gradlew assembleDebug

README.md

@@ -4,7 +4,7 @@ Repository for the [Apollo Kotlin](https://github.com/apollographql/apollo-kotli
 
 The tutorial is available through our [documentation site](https://www.apollographql.com/docs/kotlin/tutorial/00-introduction/). This repository contains the corresponding code.
 
-* [compose](./compose) (current): using [Jetpack Compose](https://developer.android.com/jetpack/compose)
-* [views](./views) (kept as reference): using the [Android Views](https://developer.android.com/develop/ui/views/layout/declaring-layout) system. This directory is kept as reference but is not maintained anymore.
+- [start](./start): the starter project with the boilerplate and UI code already written but no Apollo Kotlin code.
+- [final](./final): the final state of the application with all functionality
 
 For copy errors in the tutorial, please file bugs against the main [`apollo-kotlin` repo](https://github.com/apollographql/apollo-kotlin). For broken code, please file issues on this repo.