feat(safety): fetch reports and fetch snapshot API

crates/quark/src/impl/dummy/safety/report.rs

@@ -9,4 +9,8 @@ impl AbstractReport for DummyDb {
         info!("Insert {:?}", report);
         Ok(())
     }
+
+    async fn fetch_reports(&self) -> Result<Vec<Report>> {
+        Ok(vec![])
+    }
 }

crates/quark/src/impl/dummy/safety/snapshot.rs

@@ -9,4 +9,8 @@ impl AbstractSnapshot for DummyDb {
         info!("Insert {:?}", snapshot);
         Ok(())
     }
+
+    async fn fetch_snapshot(&self, _report_id: &str) -> Result<Snapshot> {
+        todo!()
+    }
 }

crates/quark/src/impl/mongo/safety/report.rs

@@ -10,4 +10,8 @@ impl AbstractReport for MongoDb {
     async fn insert_report(&self, report: &Report) -> Result<()> {
         self.insert_one(COL, report).await.map(|_| ())
     }
+
+    async fn fetch_reports(&self) -> Result<Vec<Report>> {
+        self.find(COL, doc! {}).await
+    }
 }

crates/quark/src/impl/mongo/safety/snapshot.rs

@@ -10,4 +10,14 @@ impl AbstractSnapshot for MongoDb {
     async fn insert_snapshot(&self, snapshot: &Snapshot) -> Result<()> {
         self.insert_one(COL, snapshot).await.map(|_| ())
     }
+
+    async fn fetch_snapshot(&self, report_id: &str) -> Result<Snapshot> {
+        self.find_one(
+            COL,
+            doc! {
+                "report_id": report_id
+            },
+        )
+        .await
+    }
 }