Merge develop into main (#313)

- Add app path get() functions to `TactilityC`
- Improved `Dispatcher` and `DispatcherThread`
- Improved `PubSub` (type safety)
- Created test for `DispatcherThread` and `PubSub`
- Save properties files on app exit (various apps) by posting it to the main dispatcher (fixes UI hanging briefly on app exit)
- Fixed bug with `SystemSettings` being read from the wrong file path.
- `loadPropertiesFile()` now uses `file::readLines()` instead of doing that manually
- Increased timer task stack size (required due to issues when reading a properties file for the very first time)
- General cleanup
- Created `EstimatedPower` driver that uses an ADC pin to measure voltage and estimate the battery charge that is left.
- Cleanup of T-Deck board (updated to new style)

Tactility/Source/service/wifi/WifiSettings.cpp

@@ -1,9 +1,8 @@
-#include "Tactility/service/wifi/WifiSettings.h"
-#include "Tactility/Preferences.h"
-#include "Tactility/file/PropertiesFile.h"
+#include <Tactility/service/wifi/WifiSettings.h>
 
-#include <Tactility/Log.h>
 #include <Tactility/file/File.h>
+#include <Tactility/file/PropertiesFile.h>
+#include <Tactility/Log.h>
 
 namespace tt::service::wifi::settings {
 
@@ -15,6 +14,12 @@ struct WifiSettings {
     bool enableOnBoot;
 };
 
+static WifiSettings cachedSettings {
+    .enableOnBoot = false
+};
+
+static bool cached = false;
+
 static bool load(WifiSettings& settings) {
     std::map<std::string, std::string> map;
     if (!file::loadPropertiesFile(SETTINGS_FILE, map)) {
@@ -36,19 +41,27 @@ static bool save(const WifiSettings& settings) {
     return file::savePropertiesFile(SETTINGS_FILE, map);
 }
 
+WifiSettings getCachedOrLoad() {
+    if (!cached) {
+        if (!load(cachedSettings)) {
+            TT_LOG_E(TAG, "Failed to load %s", SETTINGS_FILE);
+        } else {
+            cached = true;
+        }
+    }
+
+    return cachedSettings;
+}
+
 void setEnableOnBoot(bool enable) {
-    WifiSettings settings { .enableOnBoot = enable };
-    if (!save(settings)) {
+    cachedSettings.enableOnBoot = enable;
+    if (!save(cachedSettings)) {
         TT_LOG_E(TAG, "Failed to save %s", SETTINGS_FILE);
     }
 }
 
 bool shouldEnableOnBoot() {
-    WifiSettings settings;
-    if (!load(settings)) {
-        return false;
-    }
-    return settings.enableOnBoot;
+    return getCachedOrLoad().enableOnBoot;
 }
 
 } // namespace