add: audit log and reports table

TODO: audit log/reports UIs

crates/core/src/model/moderation.rs

@@ -0,0 +1,54 @@
+use serde::{Deserialize, Serialize};
+use tetratto_shared::{snow::AlmostSnowflake, unix_epoch_timestamp};
+
+use super::reactions::AssetType;
+
+#[derive(Serialize, Deserialize)]
+pub struct AuditLogEntry {
+    pub id: usize,
+    pub created: usize,
+    pub moderator: usize,
+    pub content: String,
+}
+
+impl AuditLogEntry {
+    /// Create a new [`AuditLogEntry`].
+    pub fn new(moderator: usize, content: String) -> Self {
+        Self {
+            id: AlmostSnowflake::new(1234567890)
+                .to_string()
+                .parse::<usize>()
+                .unwrap(),
+            created: unix_epoch_timestamp() as usize,
+            moderator,
+            content,
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct Report {
+    pub id: usize,
+    pub created: usize,
+    pub owner: usize,
+    pub content: String,
+    pub asset: usize,
+    pub asset_type: AssetType,
+}
+
+impl Report {
+    /// Create a new [`Report`].
+    pub fn new(owner: usize, content: String, asset: usize, asset_type: AssetType) -> Self {
+        Self {
+            id: AlmostSnowflake::new(1234567890)
+                .to_string()
+                .parse::<usize>()
+                .unwrap(),
+            created: unix_epoch_timestamp() as usize,
+            owner,
+            content,
+            asset,
+            asset_type,
+        }
+    }
+}