Add citation file

CITATION.cff

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+cff-version: 1.0.0
+message: "If you use this software, please cite it as below."
+authors:
+- family-names: "Pemberton"
+  given-names: "Steve"
+  orcid: "https://orcid.org/0000-0003-2496-1968"
+- family-names: "Saghapour"
+  given-names: "Tayebeh"
+  orcid: "https://orcid.org/0000-0003-3157-0287"
+- family-names: "Giles-Corti"
+  given-names: "Billie"
+  orcid: "https://orcid.org/0000-0003-0102-0225"
+- family-names: "Abdollahyar"
+  given-names: "Mahsa"
+  orcid: "https://orcid.org/0009-0002-1222-9833"
+- family-names: "Both"
+  given-names: "Alan"
+  orcid: "https://orcid.org/0000-0003-4021-9632"
+- family-names: "Pearson"
+  given-names: "Daniel"
+  orcid: "https://orcid.org/0000-0001-6646-7461"
+- family-names: "Higgs"
+  given-names: "Carl"
+  orcid: "https://orcid.org/0000-0002-5903-9095"
+- family-names: "Jafari"
+  given-names: "Afshin"
+  orcid: "https://orcid.org/0000-0001-5153-2179"
+- family-names: "Singh"
+  given-names: "Dhirendra"
+  orcid: "https://orcid.org/0000-0001-8369-8878"
+- family-names: "Gunn"
+  given-names: "Lucy"
+  orcid: "https://orcid.org/0000-0002-9309-3626"
+- family-names: "Woodcock"
+  given-names: "James"
+  orcid: "https://orcid.org/0000-0003-4769-5375"
+- family-names: "Zapata-Diomedi"
+  given-names: "Belén"
+  orcid: "https://orcid.org/0000-0002-9238-0375"
+title: "20-minute neighbourhood scenario modelling for Melbourne (JIBE)"
+version: 1.0.0
+doi: 10.5281/zenodo.tbc
+date-released: 2024-09-27
+url: "https://github.com/jibeproject/20mnMelbourne"