Create CITATION.cff (#368)

CITATION.cff

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+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+ - family-names: "Durumeric"
+   given-names: "Zakir"
+   orcid: "https://orcid.org/0000-0002-9647-4192"
+ - family-names: "Pearce"
+   given-names: "Paul"
+ - family-names: "Stephens"
+   given-names: "Phillip"
+ - family-names: "Adrian"
+   given-names: "David"
+ - family-names: "Mohanty"
+   given-names: "Vishal"
+ - family-names: "Izhikevich"
+   given-names: "Liz"
+ - family-names: "Akiwate"
+   given-names: "Gautam"
+ - family-names: "Berger"
+   given-names: "Briana"
+ - family-names: "Berger"
+   given-names: "Briana"
+ - family-names: "Drakontaidis"
+   given-names: "Spencer"
+ - family-names: "Ascheman"
+   given-names: "Anna"
+title: "zdns"
+date-released: 2016
+url: "https://github.com/zmap/zdns"
+preferred-citation:
+  type: "conference-paper"
+  authors:
+   - family-names: "Izhikevich"
+     given-names: "Liz"
+   - family-names: "Akiwate"
+     given-names: "Gautam"
+   - family-names: "Berger"
+     given-names: "Briana"
+   - family-names: "Berger"
+     given-names: "Briana"
+   - family-names: "Drakontaidis"
+     given-names: "Spencer"
+   - family-names: "Ascheman"
+     given-names: "Anna"
+   - family-names: "Pearce"
+     given-names: "Paul"
+   - family-names: "Adrian"
+     given-names: "David"
+   - family-names: "Durumeric"
+     given-names: "Zakir"
+  collection-title: "ACM Internet Measurement Conference"
+  title: "ZDNS: A Fast DNS Toolkit for Internet Measurement"
+  year: 2022