Embed migrations into Rust binary

src-tauri/yaak-models/migrations/20250123192023_plugin-kv.sql

@@ -0,0 +1,11 @@
+CREATE TABLE plugin_key_values
+(
+    model       TEXT     DEFAULT 'plugin_key_value' NOT NULL,
+    created_at  DATETIME DEFAULT CURRENT_TIMESTAMP  NOT NULL,
+    updated_at  DATETIME DEFAULT CURRENT_TIMESTAMP  NOT NULL,
+    deleted_at  DATETIME,
+    plugin_name TEXT                                NOT NULL,
+    key         TEXT                                NOT NULL,
+    value       TEXT                                NOT NULL,
+    PRIMARY KEY (plugin_name, key)
+);