[Feature Request] Bluetooth Control, via configuration.

[bluetooth_boot_off](https://github.com/AdnanHodzic/auto-cpufreq?tab=readme-ov-file#bluetooth_boot_off)
```
Turn off Bluetooth on boot (only)! Can be turned on any time later on.
```
[bluetooth_boot_on](https://github.com/AdnanHodzic/auto-cpufreq?tab=readme-ov-file#bluetooth_boot_on)
```
Turn on Bluetooth on boot.
```

Instead of having these as command line arguments, It would be nice if it could be enabled and disabled via the config file.
```
bluetooth_boot=on/off
```

I am on NixOS using flakes, and I don't really know how I would do that in a declarative way.
@shadeyg56

Start by tracing the existing bluetooth_boot_off and bluetooth_boot_on command-line paths, then find where the configuration file is parsed. Add the requested bluetooth_boot=on/off configuration behavior while preserving the existing boot-only semantics, and verify that Bluetooth can still be enabled or disabled later as described.

索引モデルが issue の本文から書いたものです。