move models and prompts to testing config folder

tests/config/models.JSON

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+{
+    "Microsoft Phi": "phi", 
+    "Gemma 2": "gemma2:2b", 
+    "Tinyllama": "tinyllama"
+}

tests/config/prompts.json

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+{
+    "sample": "Here are some examples that have already been identified as either human-written or AI-written. ",
+    "description": "Using the examples presented above, can you describe differences between works written by humans and by AI?",
+    "introduction": "Please help me determine whether the text was made by a human or an LLM:",
+    "classify": "Please help me determine whether this piece text above is written a human or by a large language model.",
+    "judge": "Try to consider both options before coming up with a single-choice conclusion.",
+    "answer format": "Your response must always end with your verdict in a new line that either contains “human” or “AI” without any additional words, quotation marks, formatting, or punctuations. Examples of responses include: \n“ABC \n\nhuman”\nor\n“DEF \n\nAI”\n\nwhere “ABC” and “DEF” are placeholders for your explanations."
+}