implement/init e2e tests (#135)

* init e2e

* updated/moved vitest, finished merge

* fix bun picking up e2e tests

* e2e: overwrite webserver config with env

* e2e: added adapter configs

* e2e: replaced image

app/e2e/inc/adapters.ts

@@ -0,0 +1,23 @@
+const adapter = process.env.TEST_ADAPTER;
+
+const default_config = {
+   media_adapter: "local"
+} as const;
+
+const configs = {
+   cloudflare: {
+      media_adapter: "r2"
+   }
+}
+
+export function getAdapterConfig(): typeof default_config {
+   if (adapter) {
+      if (!configs[adapter]) {
+         throw new Error(`Adapter "${adapter}" not found. Available adapters: ${Object.keys(configs).join(", ")}`);
+      }
+
+      return configs[adapter] as typeof default_config;
+   }
+
+   return default_config;
+}