A runnable command

- Added backup sub-command
- Added better parsing for config file
- Basis for notifications, no running after a command yet
- Updated docs and added License

License

@@ -0,0 +1,13 @@
+   Copyright 2023 Andrew Woodlee
+
+   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.