chore(highlightjs): introduce client-level list of themes

apps/server/src/routes/api/options.ts

@@ -6,7 +6,6 @@ import searchService from "../../services/search/services/search.js";
 import ValidationError from "../../errors/validation_error.js";
 import type { Request } from "express";
 import { changeLanguage, getLocales } from "../../services/i18n.js";
-import { listSyntaxHighlightingThemes } from "../../services/code_block_theme.js";
 import type { OptionNames } from "@triliumnext/commons";
 
 // options allowed to be updated directly in the Options dialog
@@ -190,10 +189,6 @@ function getUserThemes() {
     return ret;
 }
 
-function getSyntaxHighlightingThemes() {
-    return listSyntaxHighlightingThemes();
-}
-
 function getSupportedLocales() {
     return getLocales();
 }
@@ -210,6 +205,5 @@ export default {
     updateOption,
     updateOptions,
     getUserThemes,
-    getSyntaxHighlightingThemes,
     getSupportedLocales
 };