Add kernel memory functions & other memory-related changes (#590)

New Features

- Added policy-based memory allocation APIs with capability flags and optional alignment: `memory_alloc_with_policy`, `memory_realloc_with_policy`, `memory_calloc_with_policy`, and `memory_free`.
- Switched heap memory reporting to `memory_print_stats`.

Bug Fixes

- Improved allocation robustness with capability fallback behavior.
- Added overflow-safe handling for aligned zero-initialized allocations.
- Tightened const-correctness for generated device-tree device arrays.

Tests

- Added unit tests for default policy, alignment, zero-initialization, realloc preservation, freeing, and memory stats reporting.

Tactility/Include/Tactility/Tactility.h

@@ -43,7 +43,7 @@ private:
  * @param dtsModules List of modules from devicetree, null-terminated, non-null parameter
  * @param dtsDevices Array that is terminated with DTS_DEVICE_TERMINATOR
  */
-void run(Module* dtsModules[], DtsDevice dtsDevices[]);
+void run(Module* const dtsModules[], const DtsDevice dtsDevices[]);
 
 /** Provides access to the dispatcher that runs on the main task.
  * @warning This dispatcher is used for WiFi and might block for some time during WiFi connection.

Tactility/Source/Tactility.cpp

@@ -371,7 +371,7 @@ static void onLvglStarted() {
     addService(service::screenshot::manifest);
 #endif
 
-    memory_trace();
+    memory_print_stats();
 }
 
 static void onLvglStopped() {
@@ -388,10 +388,10 @@ static void onLvglStopped() {
     check(service::removeService(service::statusbar::manifest.id));
     check(service::removeService(service::gui::manifest.id));
 
-    memory_trace();
+    memory_print_stats();
 }
 
-void run(Module* dtsModules[], DtsDevice dtsDevices[]) {
+void run(Module* const dtsModules[], const DtsDevice dtsDevices[]) {
     LOG_I(TAG, "Tactility v%s on %s (%s)", TT_VERSION, CONFIG_TT_DEVICE_NAME, CONFIG_TT_DEVICE_ID);
 
     LOG_I(TAG, "Initializing kernel");

Tactility/Source/service/loader/Loader.cpp

@@ -69,7 +69,7 @@ void LoaderService::onStartAppMessage(const std::string& id, app::LaunchId launc
     transitionAppToState(new_app, app::State::Created);
     transitionAppToState(new_app, app::State::Showing);
 
-    memory_trace();
+    memory_print_stats();
 }
 
 void LoaderService::onStopTopAppMessage(const std::string& id) {
@@ -162,7 +162,7 @@ void LoaderService::onStopTopAppMessage(const std::string& id) {
         }
     }
 
-    memory_trace();
+    memory_print_stats();
 }
 
 int LoaderService::findAppInStack(const std::string& id) const {