refactor: reorganize people directory structure and update profile content

public/images/people/raj_mitra/index.md

@@ -0,0 +1,17 @@
+---
+title: Raj Mitra
+weight: 2
+description: Content & PR
+taxonomies:
+    people: [raj_mitra]
+    memberships: [team]
+extra:
+    imgPath: raj_mitra.jpeg
+    organizations: [threefold_foundation]
+    countries: [India]
+    cities: []
+    private: 0
+    socialLinks: {
+        LinkedIn: 
+    }
+---