explore: Plugin to generate Radicle Explorer URLs

_plugins/explorer.rb

@@ -0,0 +1,15 @@
+module Jekyll
+  module Explorer
+    def explore(input)
+      base = "https://app.radicle.xyz/nodes"
+      if input.include?(' ')
+        prefix, suffix = input.split(' ', 2)
+        "#{base}/#{prefix}/#{suffix}"
+      else
+        "#{base}/iris.radicle.xyz/#{input}"
+      end
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::Explorer)