feat: Add hCaptcha for public forms (#4017)

- added hCaptcha based verification for chatwoot signups

Co-authored-by: Sojan <sojan@pepalo.com>

db/migrate/20220218120357_add_h_captcha_key.rb

@@ -0,0 +1,5 @@
+class AddHCaptchaKey < ActiveRecord::Migration[6.1]
+  def change
+    ConfigLoader.new.process
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_02_15_060751) do
+ActiveRecord::Schema.define(version: 2022_02_18_120357) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"