Notes widget

[sarika01]

This is a proposed new widget wherein a user can create a post-it style note with ability to add media as well as text. The actual design is yet to be finalised.

[cpswan]

@sarika01 can you please provide a fuller description of this in order to help scope the work for sprint planning

[sarika01]

Needs to be tested and published.

[sarika01]

The design can be improved. Moving this to backlog as not on immediate priority. Development so far is on:https://github.com/atsign-foundation/at_widgets/tree/create_at_note_flutter

[ksanty]

@sachins-geekyants reassigning high priority so we can handle in PR43