Added .gitignore.

.gitignore

@@ -0,0 +1,40 @@
+# The Mia! Accounting Flask Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/27
+
+#  Copyright (c) 2022 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+*.pyc
+__pycache__
+build
+dist
+*.egg-info
+.pytest_cache
+venv
+
+.DS_Store
+.idea
+
+instance
+flask_session
+
+.scannerwork
+sonar-project.properties
+
+excludes
+.env
+*.pot
+*.mo
+zh_Hans
+node_modules