Implement soft and hard reboot functionality

[0wwafa]

Added functionality for soft and hard reboots with configuration options for short and long presses.

Magic Mapper V2.0 (work in progress)
Added soft and hard reboot.
Added short and longpress in configuration

Example:
"guide": [
{
"comment": "A short press on this button will trigger a soft reboot.",
"function": "soft_reboot"
},
{
"comment": "A long press will trigger a hard reboot (cleaning snapshots first).",
"function": "hard_reboot",
"longpress": true
}
]

[andrewfraley]

@0wwafa this will need some work to merge.

• Remove the comments at the top of magic_mapper.py
• Document the new functions in the README.md, ensuring to explain what snapshot-boot-manager does
• Document how to use long press and configure it for other functions

Thanks!