added sqlite-vec extension

packages/sqlite3_vec/android/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="me.movenext.sqlite3_vec">
+</manifest>

packages/sqlite3_vec/android/src/main/kotlin/me/movenext/sqlite3_vec/Sqlite3VecPlugin.kt

@@ -0,0 +1,16 @@
+package me.movenext.sqlite3_vec
+
+import androidx.annotation.NonNull
+
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+
+/** Sqlite3VecPlugin */
+class Sqlite3VecPlugin: FlutterPlugin {
+  override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+
+  }
+
+  override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+
+  }
+}