Added Bevy Discord in Social (#468)

Assets/Social/bevy_discord.toml

@@ -0,0 +1,16 @@
+# Name of your asset.
+name = "Bevy Discord"
+
+# Description of your asset. It should be less than 100 characters and not contain formatting.
+description = "A Discord Plugin for Bevy"
+
+# Where can your asset be found. It can be a link to crates.io, github, gitlab or similar.
+link = "https://github.com/as1100k/bevy-discord"
+
+# Optional image to showcase your asset.
+# Should be a png/jpg/gif/webp located next to your toml file, less than 2 MB in size.
+# We recommend using a 16:9 aspect ratio with a maximum width of 600 pixels.
+# image = "my_plugin_icon.png"
+
+# Optional crate name on crates.io. If there's more than one crate, pick any one of them.
+crate = "bevy_discord"