feat: hide wakatime languages (#1212)

* feat: added option to hide languages

* feat: recalculate percentages for hidden languages

* refactor: reverted langs_count and did some formatting

* doc: added hide to readme

* feat: make languages var mutable and improve filter logic

Co-authored-by: Adrian Kunz <clashsoft@hotmail.com>

* refactor: improve code and added tests

Co-authored-by: Adrian Kunz <clashsoft@hotmail.com>
Co-authored-by: Anurag <hazru.anurag@gmail.com>

api/wakatime.js

@@ -3,6 +3,7 @@ const {
   renderError,
   parseBoolean,
   clampValue,
+  parseArray,
   CONSTANTS,
   isLocaleAvailable,
 } = require("../src/common/utils");
@@ -26,6 +27,7 @@ module.exports = async (req, res) => {
     locale,
     layout,
     langs_count,
+    hide,
     api_domain,
     range,
     border_radius,
@@ -58,6 +60,7 @@ module.exports = async (req, res) => {
         custom_title,
         hide_title: parseBoolean(hide_title),
         hide_border: parseBoolean(hide_border),
+        hide: parseArray(hide),
         line_height,
         title_color,
         icon_color,