Introduce support for JavaScript, Python and Wasm execution via Graal languages

[sdeleuze]

There are multiple reasons why we may want to introduce support for polyglot languages in Spring Framework 7.1:

• Nashorn has been removed from the JDK since Java 15, and GraalJS seems to be its de-facto successor
• Python popularity has strongly increased and GraalPy provide a great support for it
• Could provide a way to integrate Wasm workload to Spring applications via GraalWasm
• Spring Integration provides already support for it via its PolyglotScriptExecutor

The impact on the Spring scripting support in the org.springframework.scripting package and on ScriptTemplateView will need to be evaluated.

[fniephaus]

Excited to see Graal Languages on the roadmap. We’re happy to assist so Spring users can tap into the Python, JavaScript, and WebAssembly ecosystems. 🙂