add sqlite db; add todos :-(; show current cameras

src/model/camera.rs

@@ -0,0 +1,24 @@
+use crate::Backend;
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+
+#[derive(FromRow, Debug, Serialize, Deserialize)]
+pub struct Camera {
+    pub uuid: String,
+    pub desc: String,
+    pub name: String,
+}
+
+impl Backend {
+    pub(crate) async fn amount_total_cameras(&self) -> i64 {
+        match self {
+            Backend::Sqlite(db) => {
+                sqlx::query!("SELECT COUNT(*) as count FROM camera")
+                    .fetch_one(db)
+                    .await
+                    .unwrap()
+                    .count
+            }
+        }
+    }
+}