GPII-184, GPII-65: Windows registry settingshandler implemented and complies to API
GPII-184: Updated SPI settingshandler tests to be synchronous instead of using outdated async and timeout hack
GPII-184: Added and fixed missing test from SPI settingshander. Also updated the .get functionality of the handler. Needs work to conform to API
GPII-184: Fixed all tests for SPISettings handler, and refixed Registry settings handler. Added tests to SPI handler, testing that it is compatible with the current API. All settingshandlers in windows now have properly functioning get functionality
GPII-184: added some missing files