Interactive rake mastodon:setup task (#6451)

* Add better CLI prompt

* Add rake mastodon:setup interactive wizard

* Test db/redis/smtp configurations and add admin user at the end

* Test database connection even when database does not exist yet

Gemfile.lock

@@ -173,6 +173,7 @@ GEM
       faraday
       multi_json
     encryptor (3.0.0)
+    equatable (0.5.0)
     erubi (1.7.0)
     et-orbi (1.0.8)
       tzinfo
@@ -224,6 +225,7 @@ GEM
     hashie (3.5.7)
     highline (1.7.10)
     hiredis (0.6.1)
+    hitimes (1.2.6)
     hkdf (0.3.0)
     htmlentities (4.3.4)
     http (3.0.0)
@@ -312,6 +314,7 @@ GEM
     msgpack (1.1.0)
     multi_json (1.12.2)
     multipart-post (2.0.0)
+    necromancer (0.4.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (4.2.0)
@@ -356,6 +359,9 @@ GEM
       parallel
     parser (2.4.0.2)
       ast (~> 2.3)
+    pastel (0.7.2)
+      equatable (~> 0.5.0)
+      tty-color (~> 0.4.0)
     pg (0.21.0)
     pghero (1.7.0)
       activerecord
@@ -550,6 +556,23 @@ GEM
     thread (0.2.2)
     thread_safe (0.3.6)
     tilt (2.0.8)
+    timers (4.1.2)
+      hitimes
+    tty-color (0.4.2)
+    tty-command (0.7.0)
+      pastel (~> 0.7.0)
+    tty-cursor (0.5.0)
+    tty-prompt (0.15.0)
+      necromancer (~> 0.4.0)
+      pastel (~> 0.7.0)
+      timers (~> 4.0)
+      tty-cursor (~> 0.5.0)
+      tty-reader (~> 0.2.0)
+    tty-reader (0.2.0)
+      tty-cursor (~> 0.5.0)
+      tty-screen (~> 0.6.4)
+      wisper (~> 2.0.0)
+    tty-screen (0.6.4)
     twitter-text (1.14.7)
       unf (~> 0.1.0)
     tzinfo (1.2.4)
@@ -579,6 +602,7 @@ GEM
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
+    wisper (2.0.0)
     xpath (2.1.0)
       nokogiri (~> 1.3)
 
@@ -684,6 +708,8 @@ DEPENDENCIES
   simplecov (~> 0.14)
   sprockets-rails (~> 3.2)
   strong_migrations
+  tty-command
+  tty-prompt
   twitter-text (~> 1.14)
   tzinfo-data (~> 1.2017)
   uglifier (~> 3.2)