Fix and add Absolute Controls HVAC JSON profile (port 4998)

[devprbtt]

Motivation

• Provide a working HVAC-only profile for Absolute Controls that communicates over TCP using JSON payloads on port 4998 and matches the ENV_HVACCONTROLLER_SOURCE resource expectations.
• Align action and state variable names/bindings so the HVAC UI/state center integrates correctly and optimistic updates work as expected.
• Replace the broken/insufficient earlier profile with a clearer, consistent JSON command assembly approach that uses the thermostat address as the id field.

Description

• Add new profile file absolute/absolute controls_hvac_json.xml declaring an IP control interface on port 4998 and an ENV_HVACCONTROLLER_SOURCE resource.
• Define HVAC state variables including setpoints (Current_Cool_Point_Setting, Current_Heat_Point_Setting), mode/power/fan state (Current_Mode_State, Current_Power_State, Current_Fan_State), mode booleans, and fan-mode booleans (ThermostatCurrentFanModeIs*).
• Implement actions for setpoints (SetCoolPointTemperature, SetHeatPointTemperature), mode control (SetHVACModeHeat/Cool/Off), incremental setpoint changes (Increase/Decrease*), and fan speed (SetFanSpeedHigh/Mid/Low/Auto) that assemble JSON commands via parameter_list with ThermostatAddress as the id.
• Keep optimistic updates for mode/power/fan and set HasReceivedCommand flags so UI/state updates immediately on user actions.

Testing

• No automated tests were executed for this profile-only change.

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Codex Task