Add theme Electric Purple (#1889)

* add theme file

add theme file electricPurple.js

* import theme file 

import theme file  electricPurple

* add electricPurple.css.js

ui/src/themes/index.js

@@ -5,6 +5,7 @@ import GreenTheme from './green'
 import SpotifyTheme from './spotify'
 import LigeraTheme from './ligera'
 import MonokaiTheme from './monokai'
+import ElectricPurpleTheme from './electricPurple'
 
 export default {
   // Classic default themes
@@ -12,6 +13,7 @@ export default {
   DarkTheme,
 
   // New themes should be added here, in alphabetic order
+  ElectricPurpleTheme,
   ExtraDarkTheme,
   GreenTheme,
   LigeraTheme,