Add MQTT switch support including HomeAssistant autodiscovery

.envrc

@@ -1 +1,11 @@
-use_nix
+#!/bin/bash
+
+# This is a better (faster) alternative to the built-in Nix support
+if ! has nix_direnv_version || ! nix_direnv_version 3.0.4; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.0.4/direnvrc" "sha256-DzlYZ33mWF/Gs8DDeyjr8mnVmQGx7ASYqA5WlxwvBG4="
+fi
+
+# We only want to use Nix platformio if we aren't already in a platformio IDE
+if [ "$TERM_PROGRAM" != "vscode" ]; then
+  use flake
+fi

flake.nix

@@ -0,0 +1,23 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05-small";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          pkgs = import nixpkgs {
+            inherit system;
+          };
+        in
+        with pkgs;
+        {
+          devShells.default = mkShell {
+            buildInputs = [
+              platformio
+            ];
+          };
+        }
+      );
+}

platformio.ini

@@ -1,15 +1,23 @@
 [env]
-platform = espressif32@^5
-framework = arduino
+platform = espressif32@^6.7.0
+platform_packages = framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#2.0.17
 monitor_speed = 115200
+framework = arduino
 lib_deps =
-    https://github.com/plapointe6/EspMQTTClient @ ^1.13.2
+    knolleary/PubSubClient@^2.8
     bblanchon/ArduinoJson @ ^6.19.4
     https://github.com/DoomHammer/Adafruit-GFX-Library#enable-utf-8
     https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-DMA @ ^3.0.9
+    https://gitlab.com/doomhammerng/wifi-manager#rpi-picow
+    ropg/ezTime@^0.8.3
+    ayushsharma82/ElegantOTA@^3.1.1
+build_flags =
+    -DELEGANTOTA_USE_ASYNC_WEBSERVER
 
 [env:esp32]
 board = esp32dev
+board_build.filesystem = littlefs
 
 [env:mhetesp32minikit]
-board = mhetesp32minikit
+board = mhetesp32minikit
+board_build.filesystem = littlefs