Rct225 patch 1 (#2683)

* Rename palmer.md to pelmer.md

* Create 20250721-CoDaS-HEP.yml

Author: rct225

_codas-hep-instructors/2025/palmer.md renamed to _codas-hep-instructors/2025/pelmer.md

@@ -0,0 +1,16 @@
+name: CoDaS-HEP 2025 - Computational and Data Science Training for High Energy Physics
+startdate: 2025-07-21
+enddate: 2025-07-25
+location: Princeton University
+meetingurl: http://codas-hep.org
+image:
+description: |
+The CoDaS-HEP school aims to provide a broad introduction to these critical skills as well as an overview of applications High Energy Physics. Specific topics to be covered at the school include:
+  - Parallel Programming
+  - Data Science Tools and Techniques
+  - Machine Learning - Technology and Methods
+  - Practical skills: performance evaluation, collaborative use of git/github
+  - The program includes both lectures and practical hands-on exercises.
+
+labels:
+  - training