chore: create bip45 package

`dart create -t package bip45 --force`

.gitignore

@@ -1,27 +1,7 @@
-# See https://www.dartlang.org/guides/libraries/private-files
-
-# Files and directories created by pub
+# https://dart.dev/guides/libraries/private-files
+# Created by `dart pub`
 .dart_tool/
-.packages
-build/
-# If you're building an application, you may want to check-in your pubspec.lock
-pubspec.lock
-
-# Directory created by dartdoc
-# If you don't generate documentation locally you can remove this line.
-doc/api/
 
-# dotenv environment variables file
-.env*
-
-# Avoid committing generated Javascript files:
-*.dart.js
-*.info.json      # Produced by the --dump-info flag.
-*.js             # When generated by dart2js. Don't specify *.js if your
-                 # project includes source files written in JavaScript.
-*.js_
-*.js.deps
-*.js.map
-
-.flutter-plugins
-.flutter-plugins-dependencies
+# Avoid committing pubspec.lock for library packages; see
+# https://dart.dev/guides/libraries/private-files#pubspeclock.
+pubspec.lock

CHANGELOG.md

@@ -0,0 +1,3 @@
+## 1.0.0
+
+- Initial version.

README.md

@@ -1,2 +1,39 @@
-# bip45
-BIP-0045
+<!-- 
+This README describes the package. If you publish this package to pub.dev,
+this README's contents appear on the landing page for your package.
+
+For information about how to write a good package README, see the guide for
+[writing package pages](https://dart.dev/tools/pub/writing-package-pages). 
+
+For general information about developing packages, see the Dart guide for
+[creating packages](https://dart.dev/guides/libraries/create-packages)
+and the Flutter guide for
+[developing packages and plugins](https://flutter.dev/to/develop-packages). 
+-->
+
+TODO: Put a short description of the package here that helps potential users
+know whether this package might be useful for them.
+
+## Features
+
+TODO: List what your package can do. Maybe include images, gifs, or videos.
+
+## Getting started
+
+TODO: List prerequisites and provide or point to information on how to
+start using the package.
+
+## Usage
+
+TODO: Include short and useful examples for package users. Add longer examples
+to `/example` folder. 
+
+```dart
+const like = 'sample';
+```
+
+## Additional information
+
+TODO: Tell users more about the package: where to find more information, how to 
+contribute to the package, how to file issues, what response they can expect 
+from the package authors, and more.

analysis_options.yaml

@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

example/bip45_example.dart

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+import 'package:bip45/bip45.dart';
+
+void main() {
+  var awesome = Awesome();
+  print('awesome: ${awesome.isAwesome}');
+}

lib/bip45.dart

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+/// Support for doing something awesome.
+///
+/// More dartdocs go here.
+library;
+
+export 'src/bip45_base.dart';
+
+// TODO: Export any libraries intended for clients of this package.

lib/src/bip45_base.dart

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+// TODO: Put public facing types in this file.
+
+/// Checks if you are awesome. Spoiler: you are.
+class Awesome {
+  bool get isAwesome => true;
+}

pubspec.yaml

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+name: bip45
+description: A starting point for Dart libraries or applications.
+version: 1.0.0
+# repository: https://github.com/my_org/my_repo
+
+environment:
+  sdk: ^3.5.4
+
+# Add regular dependencies here.
+dependencies:
+  # path: ^1.8.0
+
+dev_dependencies:
+  lints: ^4.0.0
+  test: ^1.24.0

test/bip45_test.dart

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+import 'package:bip45/bip45.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('A group of tests', () {
+    final awesome = Awesome();
+
+    setUp(() {
+      // Additional setup goes here.
+    });
+
+    test('First Test', () {
+      expect(awesome.isAwesome, isTrue);
+    });
+  });
+}