Move all entities to their own folder.

src/database/entities/channel.rs

@@ -0,0 +1,31 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct LastMessage {
+    id: String,
+    user_id: String,
+    short_content: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Channel {
+    #[serde(rename = "_id")]
+    pub id: String,
+    #[serde(rename = "type")]
+    pub channel_type: u8,
+
+    // DM: whether the DM is active
+    pub active: Option<bool>,
+    // DM + GDM: last message in channel
+    pub last_message: Option<LastMessage>,
+    // DM + GDM: recipients for channel
+    pub recipients: Option<Vec<String>>,
+    // GDM: owner of group
+    pub owner: Option<String>,
+    // GUILD: channel parent
+    pub guild: Option<String>,
+    // GUILD + GDM: channel name
+    pub name: Option<String>,
+    // GUILD + GDM: channel description
+    pub description: Option<String>,
+}