chore: add gray-matter dependency for markdown frontmatter parsing

public/images/people/omar_kassem/omar_kassem.md

@@ -2,16 +2,23 @@
 id: omar_kassem
 name: Omar Kassem
 rank: 3
-memberships: [tech]
-category: [foundation]
-bio: A passionate Software Engineer, Started his career at Codescalers.    
+memberships:
+  - tech
+category:
+  - foundation
+bio: 'A passionate Software Engineer, Started his career at Codescalers.'
 excerpt: Software Engineer
-linkedin: https://www.linkedin.com/in/omar-kassem/
-websites: https://threefold.tech
-github: https://github.com/0oM4R
+linkedin: 'https://www.linkedin.com/in/omar-kassem/'
+websites: 'https://threefold.tech'
+github: 'https://github.com/0oM4R'
 image: ./omar_kassem.jpg
-projects: [threefold_tech]
-countries: [Egypt]
-cities: [Cairo]
+projects:
+  - threefold_tech
+countries:
+  - Egypt
+cities:
+  - Cairo
 private: 0
+title: Software Engineer
 ---
+