Fixes and improvements (#185)

- unPhone improvements related to power and boot (add boot count logging)
- Cleanup of Mutex acquire/release
- Removed `tt_assert()` in favour of `assert()`
- Fix sim build (likely failed due to migration of GitHub Actions to Ubuntu 24.04)

Tactility/Private/app/AppInstance.h

@@ -41,7 +41,7 @@ private:
         const std::shared_ptr<app::AppManifest>& manifest
     ) {
         if (manifest->location.isInternal()) {
-            tt_assert(manifest->createApp != nullptr);
+            assert(manifest->createApp != nullptr);
             return manifest->createApp();
         } else if (manifest->location.isExternal()) {
             if (manifest->createApp != nullptr) {