Document emoji picker (#4338)

Co-authored-by: Tom Moor <tom.moor@gmail.com>

server/routes/api/documents/schema.ts

@@ -1,3 +1,4 @@
+import emojiRegex from "emoji-regex";
 import isEmpty from "lodash/isEmpty";
 import isUUID from "validator/lib/isUUID";
 import { z } from "zod";
@@ -186,6 +187,9 @@ export const DocumentsUpdateSchema = BaseSchema.extend({
     /** Doc text to be updated */
     text: z.string().optional(),
 
+    /** Emoji displayed alongside doc title */
+    emoji: z.string().regex(emojiRegex()).nullish(),
+
     /** Boolean to denote if the doc should occupy full width */
     fullWidth: z.boolean().optional(),