Added LiteLLM to the stack

Development/litellm/tests/test_litellm/integrations/dotprompt/sample_prompt.prompt

@@ -0,0 +1,16 @@
+---
+model: gemini/gemini-1.5-pro
+input:
+  schema:
+    text: string
+output:
+  format: json
+  schema:
+    title?: string, the title of the article if it has one
+    summary: string, a 3-sentence summary of the text
+    tags?(array, a list of string tag category for the text): string
+---
+
+Extract the requested information from the given text. If a piece of information is not present, omit that field from the output.
+
+Text: {{text}}