Child Accessories
### Feature Description

There should be a way to have child accessories, which would essentially be a child bridge on the Homebridge side but a simple home accessory on the HomeKit side, without the accessory being attached to a bridge.

Currently, the only way to have a plug-in be separated from the main Homebridge process is to use a child bridge. Although I assume that this works for plug-ins which only handle one accessory which is what this feature would mainly be targeted towards, I haven't actually tried it and I am only using child bridges for the plug-ins that I utilize which handle more than one accessory, the use of a bridge is completely unnecessary when the plug-in only bridges in one accessory, and I assume it also unnecessarily clutters things up.

What should happen is that there should be a button called "add plug-in to separate process" or something like that. This would be the exact same as child bridging a plug-in on the Homebridge side. However, in this current state, the accessories of the bridged plug-in would stay on the main Homebridge bridge.

Another button should be added called "unbridge accessory". You would then select the accessory that you wanted to unbridge.
If the plug-in combines multiple attributes of the same accessory into a single accessory with separate tiles, then there should be an option for if each of these individual tiles should be unbridged as individual accessories or if the entire multi-tile  accessory should be unbridged and advertised as such.

Child bridging should be available still, but allowing a person to unbridge an accessory from a plug-in without having to rely on the developer adding such a function to their plug-in and also without the creation of an unnecessary bridge would be great.

Note: I would be OK with the first button listed above being axed and instead you would just child bridge the plug-in and add another button called "advertise accessories individually", which would get rid of the bridge and advertise each of the plug-ins accessories as individual accessories, with the option to pick and choose which accessories are advertised individually and which ones are added to the bridge, if the plug-in handles more than one accessory.

There are two instances in my set up where this would be helpful:
1: Homebridge Govee, where we only have one heater device.
2: Homebridge Frigidaire AC plug-in, where we only have one Frigidaire air conditioner.
In both of these cases, the plug-ins group the multiple attributes of the accessory into a single accessory with multiple tiles.

edit: I just realized that this was being posted in the Config UIX issues page, not sure how to move it to the Homebridge issues page. So sorry about that.