[Moderation workflow] New content flag flow

[setch-l]

Parts of this flow will be implemented in #1498 #1499, etc. but this ticket is to make sure we test and complete the entire flow for flagging a note.

Given that I am a user of Nos
When I click on Flag content
Then I see a Flag Content screen with the following elements:
Header: Cancel | Flag content | in active Send button
Body:
Create a tag for this content that other
people in your network can see.

Select a tag for the content

Spam

Harassment & Profanity
(description)

NSFW
(description)

Illegal
(description)

Other
(description)

Designs
https://www.figma.com/design/s0qf4VmyQygydP8MIQazZc/Nos?node-id=8435-4994&t=nKXLDbourgXxMHei-1