Create readmeSnippets.ts for snippets in readme

- It has the advantage of ts support => enforcing all and valid config keys are present

src/shared/constants/readmeSnippets.ts

@@ -0,0 +1,21 @@
+import { Config } from "../../ConfigContext";
+import { InitRequestBody } from "../types/initRequestBody";
+
+// Remember to update readme when you change this file.
+
+export const exampleCustomElementConfig: Config = {
+  language: "{Kontent.ai language codename}",
+  projectId: "{Kontent.ai project ID}",
+  algoliaAppId: "{Algolia app id}",
+  algoliaSearchKey: "{Algolia search-only api key}",
+  algoliaIndexName: "{Algolia index name}",
+  slugCodename: "{Kontent.ai slug codename}",
+};
+
+export const exampleInitRequestBody: InitRequestBody = {
+  language: "{Kontent.ai language codename}",
+  projectId: "{Kontent.ai project ID}",
+  algoliaAppId: "{Algolia app id}",
+  algoliaIndexName: "{Algolia index name}",
+  slugCodename: "{Kontent.ai slug codename}",
+};