Rename Module -> Plugin with basic find/replace

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

lib/contrib/fortune.ex

@@ -1,5 +1,5 @@
 defmodule Omnibot.Contrib.Fortune do
-  use Omnibot.Module
+  use Omnibot.Plugin
 
   @fortunes [
     "Reply hazy, try again",

lib/contrib/linkbot.ex

@@ -1,5 +1,5 @@
 defmodule Omnibot.Contrib.Linkbot do
-  use Omnibot.Module
+  use Omnibot.Plugin
   require Logger
 
   @default_config timeout: 30_000
@@ -19,9 +19,6 @@ defmodule Omnibot.Contrib.Linkbot do
     plug Tesla.Middleware.FollowRedirects, max_redirects: 10
     plug Tesla.Middleware.Compression, format: "gzip"
 
-
-    @title_regex ~r"<title>(?<title>.+)</title>"i
-
     def get_title(url) do
       # 1. check for "meta" tag (in the header) with a "property" attribute of "og:title", and fetch the "content" attribute of that tag
       # 2. check for meta tag with attribute "name" == "title", and fetch "content" attribute

lib/contrib/wordbot.ex

@@ -1,5 +1,5 @@
 defmodule Omnibot.Contrib.Wordbot do
-  use Omnibot.Module.Base
+  use Omnibot.Plugin.Base
   use Supervisor
   require Logger
 

lib/contrib/wordbot/bot.ex

@@ -1,6 +1,6 @@
 defmodule Omnibot.Contrib.Wordbot.Bot do
-  use Omnibot.Module.Base
-  use Omnibot.Module.GenServer
+  use Omnibot.Plugin.Base
+  use Omnibot.Plugin.GenServer
 
   alias Omnibot.{Contrib.Wordbot, Irc, State, Util}
   require Logger
@@ -128,7 +128,7 @@ defmodule Omnibot.Contrib.Wordbot.Bot do
     start_round(irc, channel)
   end
 
-  ## Module callbacks
+  ## Plugin callbacks
 
   @impl true
   def on_init(cfg) do