tweak the db model for watches, add handler skeletons

src/watches/handlers.rs

@@ -1 +1,14 @@
+/// Add a Watch to the whole system
+pub async fn post_add_watch() {}
 
+/// A single Watch
+pub async fn get_watch() {}
+
+/// everything the user has saved
+pub async fn get_my_watches() {}
+
+/// Add a Watch to user's to-watch list
+pub async fn post_add_to_mine() {}
+
+/// list of all watches?
+pub async fn get_watches() {}