✨ Fix naming inconsistencies on migrations.

backend/resources/migrations/0001-add-extensions.sql

@@ -0,0 +1,26 @@
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+
+CREATE FUNCTION update_modified_at()
+  RETURNS TRIGGER AS $updt$
+  BEGIN
+    NEW.modified_at := clock_timestamp();
+    RETURN NEW;
+  END;
+$updt$ LANGUAGE plpgsql;
+
+CREATE TABLE pending_to_delete (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  type text NOT NULL,
+  data jsonb NOT NULL
+);
+
+CREATE FUNCTION handle_delete()
+  RETURNS TRIGGER AS $pagechange$
+  BEGIN
+    INSERT INTO pending_to_delete (type, data)
+    VALUES (TG_TABLE_NAME, row_to_json(OLD));
+    RETURN OLD;
+  END;
+$pagechange$ LANGUAGE plpgsql;