Added Autoreact plugin (modmail-dev#3285)

* Added Autoreact plugin

* Update changelog

* black format (from a different pr's mistake)

---------

Co-authored-by: Taku <45324516+Taaku18@users.noreply.github.com>

CHANGELOG.md

@@ -21,6 +21,7 @@ however, insignificant breaking changes do not guarantee a major version bump, s
 - `?log key <key>` to retrieve the log link and view a preview using a log key. ([PR #3196](https://github.com/modmail-dev/Modmail/pull/3196))
 - `REGISTRY_PLUGINS_ONLY`, environment variable, when set, restricts to only allow adding registry plugins. ([PR #3247](https://github.com/modmail-dev/modmail/pull/3247))
 - `DISCORD_LOG_LEVEL` environment variable to set the log level of discord.py. ([PR #3216](https://github.com/modmail-dev/Modmail/pull/3216))
+- New registry plugin: [`autoreact`](https://github.com/martinbndr/kyb3r-modmail-plugins/tree/master/autoreact).
 
 ### Changed
 - Repo moved to https://github.com/modmail-dev/modmail.
@@ -32,8 +33,6 @@ however, insignificant breaking changes do not guarantee a major version bump, s
 
 ### Internal
 - Renamed `Bot.log_file_name` to `Bot.log_file_path`. Log files are now created at `temp/logs/modmail.log`. ([PR #3216](https://github.com/modmail-dev/Modmail/pull/3216))
-
-### Internal
 - `ConfigManager.get` no longer accepts two positional arguments: the `convert` argument is now keyword-only.
 
 # v4.0.2

cogs/plugins.py

@@ -316,7 +316,7 @@ async def parse_user_input(self, ctx, plugin_name, check_version=False):
             if self.bot.config.get("registry_plugins_only"):
                 embed = discord.Embed(
                     description="This plugin is not in the registry. To install this plugin, "
-                                "you must set `REGISTRY_PLUGINS_ONLY=no` or remove this key in your .env file.",
+                    "you must set `REGISTRY_PLUGINS_ONLY=no` or remove this key in your .env file.",
                     color=self.bot.error_color,
                 )
                 await ctx.send(embed=embed)

plugins/registry.json

@@ -17,6 +17,15 @@
         "icon_url": "https://github.com/Jerrie-Aries.png",
         "thumbnail_url": "https://github.com/Jerrie-Aries/modmail-plugins/master/.static/announcement.jpg"
     },
+    "autoreact": {
+        "repository": "martinbndr/kyb3r-modmail-plugins",
+        "branch": "master",
+        "description": "Automatically reacts with emojis in certain channels.",
+        "bot_version": "4.0.0",
+        "title": "Autoreact",
+        "icon_url": "https://github.com/martinbndr/kyb3r-modmail-plugins/master/autoreact/logo.png",
+        "thumbnail_url": "https://github.com/martinbndr/kyb3r-modmail-plugins/master/autoreact/logo.png"
+    },
     "giveaway": {
         "repository": "Jerrie-Aries/modmail-plugins",
         "branch": "master",