Implemented LaunchId and FileSelection, updated Notes (#281)

- Implemented `LaunchId` to keep track of the apps that are started
- Implemented `FileSelection` app to select existing and/or new files.
- Moved some re-usable file functionality to `tt::file::`
- Renamed `Files` app to `FileBrowser`
- Updated `Notes` app to use new `FileSelection` functionality, and cleaned it up a bit.
- General code cleanliness improvements

Tactility/Include/Tactility/hal/sdcard/SdCardDevice.h

@@ -53,7 +53,7 @@ std::shared_ptr<SdCardDevice> _Nullable find(const std::string& path);
  * Always calls the function, but doesn't lock if the path is not an SD card path.
  */
 template<typename ReturnType>
-inline ReturnType withSdCardLock(const std::string& path, std::function<ReturnType()> fn) {
+ ReturnType withSdCardLock(const std::string& path, std::function<ReturnType()> fn) {
     auto sdcard = find(path);
     if (sdcard != nullptr) {
         auto scoped_lockable = sdcard->getLock().asScopedLock();