feat: implement builder plugin

This plugin will allow users to override the builder used for their application, enabling users to use custom builders if desired.

plugins/builder/builder.go

@@ -0,0 +1,13 @@
+package builder
+
+var (
+	// DefaultProperties is a map of all valid network properties with corresponding default property values
+	DefaultProperties = map[string]string{
+		"selected": "",
+	}
+
+	// GlobalProperties is a map of all valid global network properties
+	GlobalProperties = map[string]bool{
+		"selected": true,
+	}
+)