[v7.0/forgejo] Add optional pronoun field in user settings (#3076)

**Backport:** https://codeberg.org/forgejo/forgejo/pulls/1518

An attempt at adding an optional pronoun field for user profiles, as suggested here 3 years ago: https://github.com/go-gitea/gitea/issues/13990

![A Forgejo profile showing pronouns to the right of the user's username](/attachments/2e5ff300-d333-46db-9074-f030f199843c)

I made this for [my own instance](https://git.gay/h) and didn't initially think I'd make a PR because of the previous closed issue, but I thought I'd ask the Forgejo matrix chat to see if there was any support and there was!

I'm told I should make a database migration, some help as to how to do that would be appreciated.

Co-authored-by: hazycora <hazysu@riseup.net>
Co-authored-by: Gergely Nagy <forgejo@gergo.csillger.hu>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3076
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
Co-committed-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>

templates/admin/user/edit.tmpl

@@ -61,6 +61,10 @@
 					<label for="full_name">{{ctx.Locale.Tr "settings.full_name"}}</label>
 					<input id="full_name" name="full_name" value="{{.User.FullName}}" maxlength="100">
 				</div>
+				<div class="field">
+					<label for="pronouns">{{ctx.Locale.Tr "settings.pronouns"}}</label>
+					<input id="pronouns" name="pronouns" value="{{.User.Pronouns}}" maxlength="50">
+				</div>
 				<div class="required field {{if .Err_Email}}error{{end}}">
 					<label for="email">{{ctx.Locale.Tr "email"}}</label>
 					<input id="email" name="email" type="email" value="{{.User.Email}}" autofocus required>