added find endpoint and types

src/endpoints/find.ts

@@ -0,0 +1,14 @@
+import { BaseEndpoint } from './base';
+import querystring from 'querystring';
+import { ExternalIdOptions, FindResult } from '../types';
+
+export class FindEndpoint extends BaseEndpoint {
+  constructor(accessToken: string) {
+    super(accessToken);
+  }
+
+  async byId(externalId: string, options: ExternalIdOptions): Promise<FindResult> {
+    const params = querystring.encode(options);
+    return await this.api.get<FindResult>(`/find/${externalId}?${params}`);
+  }
+}

src/endpoints/index.ts

@@ -13,4 +13,5 @@ export * from './discover';
 export * from './people';
 export * from './review';
 export * from './trending';
+export * from './find';