chore: import upstream snapshot with attribution

examples/tutorials/generate-test-data/example_flow/generate_question_prompt.jinja2

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+# system:
+
+Your task is to formulate a question from given context satisfying the rules given below:
+
+1.The question should better be framed from the overall context, serving as a general question, rather than just framed from some details.
+2.The question should be specific and answerable from the given context.
+3.The question must be reasonable and must be understood and responded by humans.
+4.The question should not contain phrases like 'provided' or 'given' in the question.
+5.The question should be a question asked by the hypothetical user without any given context.
+6.The question should not contain any links.
+7.The question should not contain more than 20 words, use abbreviation wherever possible.
+
+# user:
+context:
+{{context}}
+
+question: