Update deps, better arg parsing

bin/jadb.dart

@@ -1,6 +1,7 @@
 import 'dart:ffi';
 import 'dart:io';
 
+import 'package:args/args.dart';
 import 'package:sqflite_common_ffi/sqflite_ffi.dart';
 import 'package:sqlite3/open.dart';
 
@@ -8,13 +9,32 @@ import 'jmdict/parser.dart';
 import 'kanjidic/parser.dart';
 import 'radkfile/parser.dart';
 
+ArgParser argParser() {
+  final parser = ArgParser();
+  parser.addOption(
+    'libsqlite',
+    help:
+        'Path to the SQLite library. This is used to load the SQLite library dynamically.',
+    valueHelp: 'PATH',
+    mandatory: true,
+  );
+  return parser;
+}
+
 Future<void> main(List<String> arguments) async {
+  final parser = argParser();
+  final ArgResults args = parser.parse(arguments);
+  
+  if (!args.wasParsed('libsqlite')) {
+    print(parser.usage);
+    exit(64);
+  }
+
   final db = await createDatabaseFactoryFfi(ffiInit: () {
-    open.overrideForAll(() => DynamicLibrary.open(arguments[0]));
-  })
-    .openDatabase(Directory.current.uri.resolve('jadb.sqlite').path);
+    open.overrideForAll(() => DynamicLibrary.open(args.option('libsqlite')!));
+  }).openDatabase(Directory.current.uri.resolve('jadb.sqlite').path);
+
   await addDataFromJMdict(db);
   await addDataFromRADKFILE(db);
   await addDataFromKANJIDIC(db);
 }
-