feat: hide specific languages in "Top languages" card (#150)

* add new query param to hide specific languages in top languages card

* [top-langs] add function to clean out the provided lang name

* [top-langs] rename 'hide_lang' => 'hide', refactor logic for parsing the list of provided languages to hide

* [top-langs] take list of languages to hide, as a json array

* chore: minor changes

* docs: added docs for hide lang

Co-authored-by: anuraghazra <hazru.anurag@gmail.com>

api/index.js

@@ -2,6 +2,7 @@ require("dotenv").config();
 const {
   renderError,
   parseBoolean,
+  parseJSON,
   clampValue,
   CONSTANTS,
 } = require("../src/utils");
@@ -44,7 +45,7 @@ module.exports = async (req, res) => {
 
   res.send(
     renderStatsCard(stats, {
-      hide: JSON.parse(hide || "[]"),
+      hide: parseJSON(hide),
       show_icons: parseBoolean(show_icons),
       hide_title: parseBoolean(hide_title),
       hide_border: parseBoolean(hide_border),