Added two Entities for Turn of SmartLoad and Disable Float Charge

[khurramar]

I am using deye_hybrid.yaml as the profile in Solarman integration. I needed to control SmartLoad On/Off from HA dashboard but the existing SmartLoad switch was not functioning. I also figured the Inverter itself does not offer any option to explicitly turn off the SmartLoad with just a switch, it could be possible it has not exposed any register to act for that. But there was an option to enable or disable "Off-Grid Immediately Off" and my personal reason was also that I could turn off SmartLoad right away when the Grid goes away. This option was handy but it also overlooks the Solar availability and turns of the SmartLoad during the day when Solar is present but Grid goes away. So I wanted to handle it from HA where I could automate it or even I could control from the dashboard. But unfortunately, there was no such entity in Solarman integration. I was new to HA, let alone any integration expertise. but I could manage to identify the correct register for this operation and added the entity in /deye_hybrid_custom.yaml (derived from original deye_hybrid.yaml) It's working fine just as intended.

  - name: "Smartload: Off Grid Immediately Off"
    description: Disconnect SmartLoad when grid goes off
    platform: switch
    rule: 1
    registers: [0x0146]
    value:
      bit: 15

Additionally to check the other bit of the register, I also added the following one as well which was not present.

  - name: "Battery: Disable Float Charge"
    platform: switch
    rule: 1
    registers: [0x0146]
    value:
      bit: 14

the register 0x0146 has a few more bits for other options e.g. Gen Force. I couldn't make it work properly.