- Use htmx to perform the button request
- `hx-headers='{"x-csrf-token": "{{.CsrfToken}}"}'` to authenticate (we
should probably learn to reuse this)
- `hx-post="{{.ContextUser.HomeLink}}?action=follow"` to send a POST
request to follow the user
- `hx-target="#profile-avatar-card"` to target the card div for
replacement
- `hx-swap="outerHTML"` to replace the card (as opposed to its inner
content) with the new card that shows the new follower count and button
color
- Change the backend response to return a `<div>` tag (the card) instead
of a redirect to the user page
# Before
![before](https://github.com/go-gitea/gitea/assets/20454870/86899d15-41c9-42ed-bd85-253b9caac7f8)
# After
![after](https://github.com/go-gitea/gitea/assets/20454870/59455d96-548c-4a81-a5b0-fab1dc1e87ef)
Signed-off-by: Yarden Shoham <git@yardenshoham.com>