Add initial presentation and proposal (#414)

* Add initial presentation and proposal

* compress pdf

Author: bassiounix

_data/contributors.yml

@@ -233,6 +233,7 @@
         proposals. The project provides a vehicle for applicants to propose a
         standards paper that is not yet implemented in Clang and then implement
         that paper within the scope of the project.
+      proposal: /assets/docs/Muhammad_Bassiouni_CppAlliance2026_Proposal.pdf
       mentors: Vassil Vassilev, Aaron Jomy
 
 - name: Vedant Goyal

_data/standing_meetings.yml

@@ -3,6 +3,10 @@
   time_cest: "17:00"
   connect: "[Link to zoom](https://princeton.zoom.us/j/97915651167?pwd=MXJ1T2lhc3Z5QWlYbUFnMTZYQlNRdz09)"
   agenda:
+    - title: "Implement Missing C++26 Features in Clang Initial Presentation"
+      date: 2026-06-10 16:00:00 +0200
+      speaker: "Muhammad Bassiouni"
+      link: "[Slides](/assets/presentations/Muhammad_Bassiouni_CppAlliance_Fellowship2026_initial_presentation.pdf)"
     - title: "Creating teaching materials with xeus-cpp final report"
       date: 2026-06-10 17:00:00 +0200
       speaker: "Hristiyan Shterev"