Switch to time crate, add file sizes (#329)

* Switch to time crate, add file sizes

* Update deps, adjust pack format

* Run formatter, fix clippy

src/util/webhook.rs

@@ -1,13 +1,14 @@
 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,
-    pub timestamp: DateTime<Utc>,
+    #[serde(with = "crate::util::time_ser")]
+    pub timestamp: OffsetDateTime,
     pub color: u32,
     pub fields: Vec<DiscordEmbedField>,
     pub image: DiscordEmbedImage,