Use custom emojis in the message buttons

Author: ABizzinotto

app/jobs/daily_puzzle_job.rb

@@ -39,13 +39,13 @@ def puzzle_buttons(puzzle_id)
       view.row do |row|
         row.button(
           style: :primary,
-          emoji: "🔴",
+          emoji: ENV["RUBY_EMOJI_ID"] || "🔴",
           label: "Ruby",
           custom_id: "ruby__#{puzzle_id}"
         )
         row.button(
           style: :primary,
-          emoji: "🚂",
+          emoji: ENV["RAILS_EMOJI_ID"] || "🚂",
           label: "Rails",
           custom_id: "rails__#{puzzle_id}"
         )