Move util functions out to a separated file/scope

[mrahimygk]

There are several util functions that are placed in wrong/limited scopes. e.g. Color makeShadowColor(Color color) in add_note_page.dart. please move them or make an extension function.

[bibekpanda55]

I can do that please assign it to me

[bibekpanda55]

There's already a util folder with some ext files so can you please explain a bit what particular changes you want?

[mrahimygk]

There's already a util folder with some ext files so can you please explain a bit what particular changes you want?

For example we want an extension on Color to get another color based on that color to use as shadow (BoxShadow) with custom offset, radius etc.

[bibekpanda55]

Got it will work on it