replace dart impl with submodule (#139)

* replace with submodule

* clean

* workflow fix

* version fix

* dart sdk version fix

Author: bipinkrish

.github/workflows/dart.yaml

@@ -12,20 +12,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+            submodules: true
       - uses: dart-lang/setup-dart@v1
         with:
-          sdk: 3.0
+          sdk: 3.6.0
 
       - name: Install Requirements
         working-directory: src/dart
         run: dart pub get
 
-      # Verify the use of 'dart format' on each commit.
       - name: Check formatting
         working-directory: src/dart
         run: dart format --output=none --set-exit-if-changed .
 
-      # Passing '--fatal-infos' for slightly stricter analysis.
       - name: Analyze
         working-directory: src/dart
         run: dart analyze --fatal-infos

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "examples/pose-pipelines"]
 	path = examples/pose-pipelines
 	url = [email protected]:J22Melody/pose-pipelines.git
+[submodule "src/dart"]
+	path = src/dart
+	url = https://github.com/bipinkrish/pose-dart.git