feat: env for new social networks

Author: Nevo David

.env.example

@@ -61,6 +61,14 @@ PINTEREST_CLIENT_ID=""
 PINTEREST_CLIENT_SECRET=""
 DRIBBBLE_CLIENT_ID=""
 DRIBBBLE_CLIENT_SECRET=""
+DISCORD_CLIENT_ID=""
+DISCORD_CLIENT_SECRET=""
+DISCORD_BOT_TOKEN_ID=""
+SLACK_ID=""
+SLACK_SECRET=""
+SLACK_SIGNING_SECRET=""
+MASTODON_CLIENT_ID=""
+MASTODON_CLIENT_SECRET=""
 
 # Misc Settings
 OPENAI_API_KEY=""