Move tests to relevant subprojects (#615)

- Moved test projects to the parent project they belong to
- Improved test stability/corectness
- Improved recursive directory deletion by safely ignoring current- and parent-directory entries.
- Update docs

Tactility/Tests/CMakeLists.txt

@@ -0,0 +1,27 @@
+project(TactilityTests)
+
+enable_language(C CXX ASM)
+
+
+file(GLOB_RECURSE TEST_SOURCES CONFIGURE_DEPENDS ${PROJECT_SOURCE_DIR}/Source/*.cpp)
+add_executable(TactilityTests EXCLUDE_FROM_ALL ${TEST_SOURCES})
+
+target_include_directories(TactilityTests PRIVATE ${DOCTESTINC})
+
+add_test(NAME TactilityTests COMMAND TactilityTests)
+
+target_link_libraries(TactilityTests PRIVATE
+    Tactility
+    TactilityKernel
+    platform-posix
+    lvgl-module
+    lvgl-window-manager-module
+    app-module
+    crypt-module
+    gps-module
+    gps-generic-module
+    gps-meshtastic-module
+    service-module
+    lvgl
+    SDL2::SDL2-static SDL2-static
+)