add PGlite user_votes table for local vote caching

src/client/shared/db/migrations/002_user_votes.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS user_votes (
+	legislation_id INTEGER NOT NULL,
+	vote TEXT NOT NULL CHECK (vote IN ('ja', 'nein', 'enthaltung')),
+	voted_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+	PRIMARY KEY (legislation_id)
+);

src/client/shared/db/migrations/index.ts

@@ -1,3 +1,4 @@
 import init from "./001_init.sql?raw"
+import userVotes from "./002_user_votes.sql?raw"
 
-export const migrations: string[] = [init]
+export const migrations: string[] = [init, userVotes]