Add CppInterOp as a compiler-research project and drop cppyy (#1686)

Author: aaronj0

_gsocprojects/2025/project_CppInterOp.md

@@ -0,0 +1,11 @@
+---
+project: CppInterOp
+layout: default
+logo: InterOp-logo.png
+description: |
+  [CppInterOp](https://github.com/compiler-research/CppInterOp) is a C++ Interoperability library, which leverages ROOT's Cling and LLVM's Clang-REPL C++ interpreters, to provide a minimalist and backward-compatible API facilitating seamless language interoperability. This provides downstream interactive C++ tools with the compiler as a service by embedding Clang and LLVM as libraries in their codebases. By enabling dynamic Python interactions with static C++ codebases, CppInterOp enhances computational efficiency and rapid development in high-energy physics. The library offers primitives enabling cppyy, an automatic, run-time, Python-C++ bindings generator. The CppInterOp library provides a minimalist approach for other languages to bridge C++ entities (variables, classes, etc.). This enables interoperability with C++ code, bringing the speed and efficiency of C++ to simpler, more interactive languages like Python.
+summary: |
+  The [CppInterOp](https://github.com/compiler-research/CppInterOp) library provides a minimalist approach for other languages to bridge C++ entities (variables, classes, etc.). This enables interoperability with C++ code, bringing the speed and efficiency of C++ to simpler, more interactive languages like Python.
+---
+
+{% include gsoc_project.ext %}

_gsocprojects/2025/project_Cppyy.md

@@ -1,7 +1,7 @@
 ---
 title: Implement CppInterOp API exposing memory, ownership and thread safety information 
 layout: gsoc_proposal
-project: Cppyy
+project: CppInterOp
 year: 2025
 difficulty: medium
 duration: 350