fix: Added the migration of the favourite study space table

Co-Authored-By: Tadios Temesgen <tt2022@ic.ac.uk>

supabase/migrations/20250613105939_favourites.sql

@@ -0,0 +1,12 @@
+-- Table to store users' favourite study spaces
+CREATE TABLE favourite_study_spaces (
+    user_id uuid REFERENCES users(id) ON DELETE CASCADE,
+    study_space_id uuid REFERENCES study_spaces(id) ON DELETE CASCADE,
+    created_at timestamp with time zone DEFAULT now(),
+    updated_at timestamp with time zone DEFAULT now(),
+    PRIMARY KEY (user_id, study_space_id)
+);
+
+CREATE TRIGGER favourite_study_spaces_updated_at
+AFTER UPDATE ON favourite_study_spaces
+FOR EACH ROW EXECUTE FUNCTION handle_updated_at();