Add TypeScript integrations package

ts/core/classes.runtimemanager.ts

@@ -0,0 +1,31 @@
+import type { BaseIntegration } from './classes.baseintegration.js';
+import type { IIntegrationRuntime, IIntegrationSetupContext } from './types.js';
+
+export class IntegrationRuntimeManager {
+  private readonly runtimes = new Map<string, IIntegrationRuntime>();
+
+  public async setupIntegration<TConfig>(
+    integrationArg: BaseIntegration<TConfig>,
+    configArg: TConfig,
+    contextArg: IIntegrationSetupContext = {}
+  ): Promise<IIntegrationRuntime> {
+    const runtime = await integrationArg.setup(configArg, contextArg);
+    this.runtimes.set(integrationArg.domain, runtime);
+    return runtime;
+  }
+
+  public getRuntime(domainArg: string): IIntegrationRuntime | undefined {
+    return this.runtimes.get(domainArg);
+  }
+
+  public listRuntimes(): IIntegrationRuntime[] {
+    return [...this.runtimes.values()];
+  }
+
+  public async destroyAll(): Promise<void> {
+    for (const runtime of this.runtimes.values()) {
+      await runtime.destroy();
+    }
+    this.runtimes.clear();
+  }
+}