added ddr script skills

skills/filemaker-ddr-script/agents/openai.yaml

@@ -0,0 +1,4 @@
+interface:
+  display_name: "FileMaker DDR script"
+  short_description: "Author DDRparser-compatible FileMaker scripts"
+  default_prompt: "Use $filemaker-ddr-script to create or edit a FileMaker script in DDRparser's copy-and-paste-compatible text format."