Link custom extension example

Author: simolus3

sqlite3/example/custom_extension/example/pubspec.yaml

@@ -26,5 +26,11 @@ dev_dependencies:
 
   flutter_lints: ^3.0.0
 
+dependency_overrides:
+  sqlite3:
+    path: ../../../
+  sqlite3_flutter_libs:
+    path: ../../../../sqlite3_flutter_libs
+
 flutter:
   uses-material-design: true

sqlite3/lib/src/ffi/api.dart

@@ -59,6 +59,7 @@ abstract interface class Sqlite3 implements CommonSqlite3 {
 /// For an example of how to write and load extensions, see
 ///  - this C file: https://github.com/simolus3/sqlite3.dart/blob/main/sqlite3/test/ffi/test_extension.c
 ///  - this Dart test loading it: https://github.com/simolus3/sqlite3.dart/blob/a9a379494c6b8d58a3c31cf04fe16e83b49130f1/sqlite3/test/ffi/sqlite3_test.dart#L35
+///  - Or, alternatively, this Flutter example: https://github.com/simolus3/sqlite3.dart/tree/main/sqlite3/example/custom_extension
 abstract interface class SqliteExtension {
   /// A sqlite extension having the given [extensionEntrypoint] as a function
   /// pointer.