Implement device management (#199)

- Added `tt::hal::Device` and functions (de)register devices and search for them.
- Refactored apps: `Power` and `Display` settings apps now use the device API to find devices.
- Implemented the new API for all existing drivers for all devices, including the simulator.
- Updated HAL Configuration to return `std::shared_ptr` instead of raw pointers.
- Added test project for headless tests and implemented tests for the new code.

Tests/TactilityHeadless/CMakeLists.txt

@@ -0,0 +1,27 @@
+project(TactilityCoreTests)
+
+enable_language(C CXX ASM)
+
+set(CMAKE_CXX_COMPILER g++)
+
+file(GLOB_RECURSE TEST_SOURCES ${PROJECT_SOURCE_DIR}/*.cpp)
+add_executable(TactilityHeadlessTests EXCLUDE_FROM_ALL ${TEST_SOURCES})
+
+add_definitions(-D_Nullable=)
+add_definitions(-D_Nonnull=)
+
+target_include_directories(TactilityHeadlessTests PRIVATE
+    ${DOCTESTINC}
+)
+
+add_test(NAME TactilityHeadlessTests
+    COMMAND TactilityHeadlessTests
+)
+
+target_link_libraries(TactilityHeadlessTests PRIVATE
+    Tactility
+    TactilityCore
+    TactilityHeadless
+    Simulator
+    SDL2::SDL2-static SDL2-static
+)