[lib/native] add user-filled to comm icons pack

Summary:
This diff adds the user-filled icon to the comm icons pack. These changes were copy and pasted from files given to me by @ted

I also added the icons to our dropbox

Test Plan:
Please see the screenshot below:

Reviewers: atul, rohan

Reviewed By: atul, rohan

Subscribers: ashoat, tomek, ted

Differential Revision: https://phab.comm.dev/D8308