More project data (#406)

* More project data

* Array_agg fixes + cleanup

* fix prepare

* Add approval dates to search

* Update migrations/20220725204351_more-project-data.sql

Co-authored-by: wafflecoffee <emmaffle@modrinth.com>

* Add category labels + display categories

Co-authored-by: wafflecoffee <emmaffle@modrinth.com>

src/util/webhook.rs

@@ -1,14 +1,13 @@
 use crate::models::projects::Project;
+use chrono::{DateTime, Utc};
 use serde::Serialize;
-use time::OffsetDateTime;
 
 #[derive(Serialize)]
 struct DiscordEmbed {
     pub title: String,
     pub description: String,
     pub url: String,
-    #[serde(with = "crate::util::time_ser")]
-    pub timestamp: OffsetDateTime,
+    pub timestamp: DateTime<Utc>,
     pub color: u32,
     pub fields: Vec<DiscordEmbedField>,
     pub image: DiscordEmbedImage,