Fixed the default shadow colors

Fixed the default shadow colors

Fixed dark mode default shadow color.

Fixed the default light and dark shadow colors of dark mode.

Added two types of toggle styles: softToggleStyle & softSwitchToggleS…

…tyle

Update default shadow colors in Neumorphic
Update SoftToggleDemoView in example project

Fixed the inner shadow offset

- Fixed the size of inner shadow offset. It is too large when the width of the shape is larger than its height.
- Updated the demo.

Update README

Added SoftButtonPressedEffect

Added three types of pressed effects to softButtonStyle.
Added SoftButtonDemoView in the example project.

Merge pull request costachung#4 from L1cardo/master

 Fixed the color extension of Hex color support on MacOS

Fix the incorrect size of button issue. Update SoftButtonStyle to sup…

…port dynamic size of button.

Update README.md

Update README.md