[WIP] Night mode

[justmara]

This PR adds overnight SMB restriction mode (inspired by Eating Now @dicko72).

• You set up the time interval for 'Night mode' to be active
• Set the BG offset (from profile target) in which Night mode will be active during time from step 1

So during night while your BG is below profileTarget + BG offset - SMB will be disabled and only TBR will be active for plugins. When BG escalates higher than profileTarget + BG offset - SMB overnight restriction falls off.

You can also set up Night mode to be disabled if COB > 0. Or when Temp Target is set lower than profile target.

07..15:00 time is set here because I were testing it during a day now :)

The idea of this mode itself is to add some security mode against overnight sensor pressures. Here is my daughter's BG this night - these fast drops are sensor pressures, and quick rises - BG comes back to real after pressure released.

Usually AAPS acts like this for these quick rises (see many SMBs here)

But frankly thats a graph from my test phone connected to virtual pump, because in reality MUCH lower amount of insulin were required to deal with that:

TBS is way more safe for such beaviour