Updates for Flutter 3.27

[Zverik]

There has been two changes in Flutter SDK: Color got fields a,rg,b; and toStringDeep diagnostics method got the fourth parameter, wrapWidth.

Alas ColorSpace class is exported only by dart:ui.

Also in this PR (for my convenience) I have fixed Image constructors (Image.asset() did not work), and added a wrapper for SwitchListTile.

[the-great-tao]

good job, thanks!