Automatically create admin on first start

src/data/app_config.rs

@@ -0,0 +1,19 @@
+use std::path::{Path, PathBuf};
+use rocket::serde::Deserialize;
+use crate::constants::USERS_LIST_FILE;
+
+#[derive(Debug, Deserialize)]
+#[serde(crate = "rocket::serde")]
+pub struct AppConfig {
+    storage_path: PathBuf,
+}
+
+impl AppConfig {
+    pub fn storage_path(&self) -> &Path {
+        self.storage_path.as_ref()
+    }
+
+    pub fn users_file(&self) -> PathBuf {
+        self.storage_path.join(USERS_LIST_FILE)
+    }
+}