Configure Netlify redirects for Processing domains

Added redirects for Processing subdomains to appropriate links.

Author: Stefterv

netlify.toml

@@ -0,0 +1,18 @@
+# Netlify redirects
+# 1. To add a subdomain, add a redirect in this file first and merge the PR
+# 2. Add the subdomain to the Processing website in netlify
+
+[[redirects]]
+  from = "https://wiki.processing.org/*"
+  to = "https://github.com/processing/processing4/wiki"
+  status = 302
+
+[[redirects]]
+  from = "https://vscode.processing.org/*"
+  to = "https://marketplace.visualstudio.com/items?itemName=processing-foundation.processing-vscode-extension"
+  status = 302
+
+[[redirects]]
+  from = "https://discord.processing.org/*"
+  to = "https://discord.gg/h99u95nU7q"
+  status = 302