[native_doc_dartifier] project set-up with an example (#2373)

* Squashed commit of the following:

commit 1a56b19
Author: Marshelino Maged <[email protected]>
Date:   Tue Jun 24 06:12:52 2025 +0300

    Dart like representation

commit a403817
Author: Marshelino Maged <[email protected]>
Date:   Sun Jun 22 23:55:51 2025 +0300

    Revert "method to get the summary"

    This reverts commit cc8c61e.

commit cc8c61e
Author: Marshelino Maged <[email protected]>
Date:   Sun Jun 22 23:43:29 2025 +0300

    method to get the summary

commit b112f24
Author: Marshelino Maged <[email protected]>
Date:   Sat Jun 21 06:58:50 2025 +0300

    reduce 80 chars line

commit 0590757
Author: Marshelino Maged <[email protected]>
Date:   Sat Jun 21 06:52:55 2025 +0300

    ignore line

commit d6eea20
Merge: a18b2e2 7944c5a
Author: Marshelino Maged <[email protected]>
Date:   Sat Jun 21 06:44:36 2025 +0300

    Merge branch 'dart-lang:main' into public-code-summary

commit a18b2e2
Author: Marshelino Maged <[email protected]>
Date:   Sat Jun 21 06:05:48 2025 +0300

    operator methods

commit 7b26f89
Author: Marshelino Maged <[email protected]>
Date:   Sat Jun 21 05:11:34 2025 +0300

    finish getting summary

commit cd0bf5f
Merge: 4d6a77b 5eadfaf
Author: Marshelino Maged <[email protected]>
Date:   Sun Jun 15 09:58:27 2025 +0300

    Merge branch 'dart-lang:main' into public-code-summary

commit 4d6a77b
Author: Marshelino Maged <[email protected]>
Date:   Sun Jun 15 09:55:29 2025 +0300

    Update public_abstractor.dart

commit 1154d6f
Author: Marshelino Maged <[email protected]>
Date:   Sun Jun 15 09:54:25 2025 +0300

    field summary

* initial translate prompt with its parsing

* the main function of the package with calling LLM

* adding example

* fix bug

* Use flutter instead of dart in CI

Author: marshelino-maged

.github/workflows/native_doc_dartifier.yaml

@@ -27,12 +27,12 @@ jobs:
         sdk: [stable]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-      - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
+      - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
         with:
-          sdk: ${{ matrix.sdk }}
+          channel: ${{ matrix.sdk }}
       - id: install
         name: Install dependencies
-        run: dart pub get
+        run: flutter pub get
       - name: Check formatting
         run: dart format --output=none --set-exit-if-changed .
         if: always() && steps.install.outcome == 'success'