feat: add copy function

[lyjeileen]

Changes

• Add copy and action component
• Add a doc to show actions types because they don't have their own stories. The doc is displayed within the MessageCanvas folder.

(I added a note in the MessageSpace's story and asked people to refer to MessageCanvas for the usage of getActionsComponent and getProfileComponent. It's showing ()={} right now in the MessageSpace's stories. I thought about overwriting the original code, but the message array is quite long and we will have a lot of duplicate code.

Screenshots

Video