Introducing "Add-on: Bluetooth Proxy"

Supports:
- #1983
- #1946
- #1815

docs/addon_bluetooth_proxy.md

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+# Add-on: Bluetooth Proxy
+
+## Description
+
+This add-on allows your panel's relays to function as a Bluetooth proxy (BLE only) by utilizing the internal Bluetooth radio
+along with the [ESPHome Bluetooth Proxy component](https://esphome.io/components/bluetooth_proxy.html).
+
+> [!IMPORTANT]
+>  Ensure you configure the Bluetooth Proxy using this add-on as it will enable better memory management by releasing the Bluetooth stack before a TFT update.
+
+## Installation
+
+To install, add the reference to `nspanel_esphome_addon_bluetooth_proxy` in your ESPHome settings under the `packages` section
+following the `remote_package` entry, as illustrated below:
+
+> [!WARNING]
+> While the `esp-idf` framework is the default and recommended for the [ESP32 Platform](#framework-esp-idf) when Bluetooth features are enabled,
+> ensure it is not switched to the `arduino` framework. The `arduino` framework significantly increases memory usage, which may prevent installation on your panel.
+
+```yaml
+substitutions:
+  # Settings - Editable values
+  device_name: "YOUR_NSPANEL_NAME"
+  friendly_name: "Your panel's friendly name"
+  wifi_ssid: !secret wifi_ssid
+  wifi_password: !secret wifi_password
+
+  # Add-on configuration (if needed)
+  ## Add-on climate
+  # heater_relay: "1"  # Possible values: "1" or "2"
+
+# Customization area
+##### My customization - Start #####
+##### My customization - End #####
+
+# Basic and optional configurations
+packages:
+  remote_package:
+    url: https://github.com/Blackymas/NSPanel_HA_Blueprint
+    ref: main
+    refresh: 300s
+    files:
+      - nspanel_esphome.yaml # Basic package
+      # Optional advanced and add-on configurations
+      # - esphome/nspanel_esphome_advanced.yaml
+      - esphome/nspanel_esphome_addon_bluetooth_proxy.yaml
+      # - esphome/nspanel_esphome_addon_climate_cool.yaml
+      # - esphome/nspanel_esphome_addon_climate_heat.yaml
+      # - esphome/nspanel_esphome_addon_climate_dual.yaml
+```