[SystemSettings][TCSACR-215] Add properties (#684)
* [SystemSettings][TCSACR-215] Add properties
- AccessibilityGrayscale
- AccessibilityNegativeColor
Signed-off-by: jinwang.an <jinwang.an@samsung.com>
* Fixed version
- AccessibilityGrayscale
- AccessibilityNegativeColor
Signed-off-by: jinwang.an <jinwang.an@samsung.com>
* Fixed API Version 6
- AccessibilityGrayscaleChangedEventArgs
- AccessibilityNegativeColorChangedEventArgs
Signed-off-by: jinwang.an <jinwang.an@samsung.com>
* Fix typo grayscale and negative descriptions
Signed-off-by: jinwang.an <jinwang.an@samsung.com>