feat: flag trends db migration

src/migrations/20240126095544-add-flag-trends.js

@@ -0,0 +1,21 @@
+'use strict';
+
+exports.up = function(db, cb) {
+    db.runSql(
+        `
+        CREATE TABLE IF NOT EXISTS flag_trends (
+            id VARCHAR(255) NOT NULL,
+            project VARCHAR(255) NOT NULL REFERENCES projects (id) ON DELETE CASCADE,
+            total_flags INTEGER NOT NULL,
+            stale_flags INTEGER NOT NULL,
+            potentially_stale_flags INTEGER NOT NULL,
+            created_at TIMESTAMP default now(),
+            PRIMARY KEY (id, project)
+        );`,
+        cb,
+    );
+};
+
+exports.down = function(db, cb) {
+    db.runSql('DROP TABLE IF EXISTS flag_trends;', cb);
+};