Split helpers.cr into multiple files

src/invidious/helpers/macros.cr

@@ -0,0 +1,18 @@
+macro add_mapping(mapping)
+    def initialize({{*mapping.keys.map { |id| "@#{id}".id }}})
+    end
+
+    def to_a
+        return [{{*mapping.keys.map { |id| "@#{id}".id }}}]
+    end
+
+    DB.mapping({{mapping}})
+end
+
+macro templated(filename)
+    render "src/invidious/views/#{{{filename}}}.ecr", "src/invidious/views/layout.ecr"
+end
+
+macro rendered(filename)
+    render "src/invidious/views/#{{{filename}}}.ecr"
+end