Add tags index

app/actions/tags/index.rb

@@ -0,0 +1,13 @@
+module Adamantium
+  module Actions
+    module Tags
+      class Index < Action
+        include Deps["views.tags.index"]
+
+        def handle(req, res)
+          res.render index
+        end
+      end
+    end
+  end
+end

app/views/tags/index.rb

@@ -0,0 +1,19 @@
+module Adamantium
+  module Views
+    module Tags
+      class Index < View
+        include Deps["repos.tag_repo"]
+
+        expose :tag_groups do
+          tag_repo
+            .list
+            .group_by { |tag|
+              grouper = tag.label.strip[0].downcase
+              /[a-z]/.match?(grouper) ? grouper : "#"
+            }
+            .sort
+        end
+      end
+    end
+  end
+end