* Refactoring HOS folder structure
Refactoring HOS folder structure:
- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close#766 and #753).
* Remove Types namespaces
- Implement `btdrv` service (IBluetoothDriver).
Implement call `InitializeBluetoothLe` for initialize events of `bt` service according to RE.
- Implement `bt` service (IBluetoothUser).
Implement call `RegisterBleEvent` according to RE.
- Add a placeholder for the `btm` service (close#750).
- Implement `btm:u` service (IBtmUser) (close#751).
Implement call `GetCore` according to RE (close#752).
- Implement `IBtmUserCore` and calls `AcquireBleScanEvent`, `AcquireBleConnectionEvent`, `AcquireBleServiceDiscoveryEvent` and `AcquireBleMtuConfigEvent` according to RE.
- Implement `SetPalmaBoostMode` in `IHidServer` according to RE.
- Add stub for `SetIsPalmaAllConnectable` in `IHidServer` because we will not support Palma devices soon.
- Implement `nsd:a` and `nsd:u` service (IManager) (close#755).
Implement call `ResolveEx` according to RE (close#756).
Implement calls `GetSettingName`, `GetEnvironmentIdentifier`, `GetDeviceId`, `DeleteSettings`, `Resolve`, `ReadSaveDataFromFsForTest`, `WriteSaveDataToFsForTest` and `DeleteSaveDataOfFsForTest` according to RE.
