feat(people): add memorials for Kan, Zhitomirskiy, Estis, Scott, Martinez

Add memorial entries for Gene Kan (#163), Ilya Zhitomirskiy (#164),
Kevin Estis (#165), Chris Scott/Cyb3r_Assassin (#167), and RC
Martinez/GodFix (#168)

people/chrisscott.json

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+{
+  "firstname": "Chris",
+  "lastname": "Scott",
+  "handle": "Cyb3r_Assassin",
+  "birth": "1983",
+  "death": "2021",
+  "obituary": "https://www.clary-glenn.com/obituary/christopher-chris-scott",
+  "issue": "167",
+  "affiliations": "FoD, DEF CON Goon, DC615",
+  "mainimage": "/images/face-silhouette-clipart.png",
+  "maintext": "<p>Chris Scott, known as Cyb3r_Assassin, was a DEF CON Goon and member of the DC615 Nashville DEF CON group. He was active in the hacker community and contributed through multiple security groups and events.</p>",
+  "socialmedialinks": [
+    {
+      "sitename": "Twitter",
+      "siteurl": "https://twitter.com/Cyb3r_Assassin"
+    },
+    {
+      "sitename": "Github",
+      "siteurl": "https://github.com/Cyb3r-Assassin"
+    }
+  ],
+  "contributions": [],
+  "gallery": []
+}

people/genekan.json

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+{
+  "firstname": "Gene",
+  "lastname": "Kan",
+  "handle": "",
+  "birth": "1976",
+  "death": "2002",
+  "obituary": "",
+  "issue": "163",
+  "affiliations": "",
+  "mainimage": "/images/face-silhouette-clipart.png",
+  "maintext": "<p>Gene Kan was a computer programmer and open source advocate best known for his work on Gnutella, the peer-to-peer file sharing network. He was an early and prominent developer of the Gnutella protocol and its open source implementations, and became a visible spokesperson for the peer-to-peer movement. Kan was also a contributor to various open source projects and a frequent speaker on decentralized networking technology.</p>",
+  "socialmedialinks": [
+    {
+      "sitename": "Wikipedia",
+      "siteurl": "https://en.wikipedia.org/wiki/Gene_Kan"
+    }
+  ],
+  "contributions": [],
+  "gallery": []
+}

people/ilyazhitomirskiy.json

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+{
+  "firstname": "Ilya",
+  "lastname": "Zhitomirskiy",
+  "handle": "",
+  "birth": "1989",
+  "death": "2011",
+  "obituary": "",
+  "issue": "164",
+  "affiliations": "",
+  "mainimage": "/images/face-silhouette-clipart.png",
+  "maintext": "<p>Ilya Zhitomirskiy was a software developer and co-founder of Diaspora, a decentralized social networking platform created as a privacy-aware alternative to Facebook. While a student at New York University, Zhitomirskiy and three classmates launched a successful Kickstarter campaign in 2010 to fund development of the open source social network. The project drew widespread attention as a response to growing concerns about privacy on centralized social media platforms.</p>",
+  "socialmedialinks": [
+    {
+      "sitename": "Other",
+      "siteurl": "https://www.forbes.com/sites/meghancasserly/2011/11/16/ilya-zhitomirskiy-diaspora-suicide-speculation-depression-stress-anxiety/"
+    }
+  ],
+  "contributions": [],
+  "gallery": []
+}

people/kevinestis.json

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+{
+  "firstname": "Kevin",
+  "lastname": "Estis",
+  "handle": "",
+  "birth": "",
+  "death": "2021",
+  "obituary": "",
+  "issue": "165",
+  "affiliations": "DEF CON Goon",
+  "mainimage": "/images/face-silhouette-clipart.png",
+  "maintext": "<p>Kevin Estis was a member of the information security community and a DEF CON Goon.</p>",
+  "socialmedialinks": [
+    {
+      "sitename": "Twitter",
+      "siteurl": "https://twitter.com/kevinestis"
+    }
+  ],
+  "contributions": [],
+  "gallery": []
+}

people/rcmartinez.json

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+{
+  "firstname": "RC",
+  "lastname": "Martinez",
+  "handle": "GodFix",
+  "birth": "",
+  "death": "2021",
+  "obituary": "https://www.skydogcon.com/2021/04/in-memoriam-godfix.html",
+  "issue": "168",
+  "affiliations": "DEF CON Goon, SkyDogCon Staff",
+  "mainimage": "/images/face-silhouette-clipart.png",
+  "maintext": "<p>RC Martinez, known as GodFix, was a DEF CON Goon and SkyDogCon staff member. Described as the \"Fixer of Itches\" and \"Finder of All-the-things,\" he was a staff member for five different conferences since 2007. When not filling roles at a con, he worked as a Senior Infrastructure Engineer. RC was known for his welcoming nature, always greeting people with a hug and a smile. He lost his battle with pneumonia caused by COVID-19 on April 17, 2021, leaving behind his wife Debra and two children.</p>",
+  "socialmedialinks": [
+    {
+      "sitename": "Twitter",
+      "siteurl": "https://twitter.com/GodFix"
+    }
+  ],
+  "contributions": [],
+  "gallery": []
+}