Tests: add global provider contract suite

src/plugins/contracts/provider.contract.test.ts

@@ -0,0 +1,11 @@
+import { describe } from "vitest";
+import { providerContractRegistry } from "./registry.js";
+import { installProviderPluginContractSuite } from "./suites.js";
+
+for (const entry of providerContractRegistry) {
+  describe(`${entry.pluginId}:${entry.provider.id} provider contract`, () => {
+    installProviderPluginContractSuite({
+      provider: entry.provider,
+    });
+  });
+}