Add AnimatedCrossFade Widget to the Widget Catalog

[AryanKhubchandani]

AnimatedCrossFade Widget needs to be added to the Widget Catalog. Read How to contribute to the Widget Catalog in the README for detailed steps. Make sure to include all the arguments(name, implementation, description, codeString, link and category). Refer to any widget in widgetList.dart and its own *widget*.dart file for better understanding. Showcase all properties of the widget. (Refer to the official docs in case of any doubts) Please attach screen recording of the same once done in the PR.

[divyanshkul]

Hey @AryanKhubchandani I'd like to work on this issue

[AryanKhubchandani]

Hey @AryanKhubchandani I'd like to work on this issue

Hey @divyanshkul, I will assign it to you. Good Luck!

[AryanKhubchandani]

Can you update me with your progress @divyanshkul?