Create Tag tables and Add Tag endpoint

src/data/mod.rs

@@ -133,6 +133,12 @@ impl From<fs::Metadata> for MetadataResponse {
     }
 }
 
+#[derive(Debug, Deserialize)]
+pub struct AddTagRequest {
+    pub file_name: String,
+    pub tag_name: String,
+}
+
 #[cfg(test)]
 mod tests {
     use super::Claims;