* Added get_key to powertoysmodule interface
* Replace get_name with get_key
* Implement get_key function in modules
* Make key global constant in each module
* Update settings v1 to use key to load and save files
* Fixed fancyzones and preview pane unit tests
* Removed setings unit test as the case is not covered anymore
* Add constant files for modules and use it to reference module key
* Add constant string files to colorpicker, launcher and shortcut guide
* correct sunction signature in settings helper
* Fix powerpreview merge conflicts
* nit fix with include statement location
* add check for fields in from_json_string
* Updated preview pane tests with correct from_json_string signature
* Correct Image resizer naming
* Roll back changes for adding check for property and version
* Fix image resizer not working
* Handle most recently used search/replace strings within settings.
* Check for last modified time of json file and reload it if needed.
* Handle changes in MRU search / replace lists size.
* Improve handling of changes in MRU list size.
* Don't check for last modified time in every getter method. Load only when starting application.
* Add const identifier to getter methods.
* Address PR comments: Add const to reg and json file paths and set them in constructor initializer. Check pushIdx validity. Move implementation to cpp of PowerRenameUI constructor.
* Add error checking when getting values from registry.
* Use JSON data file for storing PowerRename settings instead of registry
* Address PR comments and made several improvements
* Remove WindowsApp.lib dependencies in test app and unit tests
* Revert changes in vcxproj for unit test
* Solve linker warnings generated while linking WindowsApp.lib
* Don't migrate enabled flag. Always read / write from registry.
