Make sentry an optional dependency

https://sqlfum.pt/ recently switched to a wasm-compiled implementation. It's 50MB, which, even gzip compressed, is big and slow for browsers to process. Compiling with tinygo fails because sentry-go depends on some stdlib things that tinygo doesn't support. Is it possible to have some tags to opt-out or opt-in to sentry? I'd like to make sqlfmt faster and smaller, and this is one thing that could help.

Start by locating where the sentry-go dependency is imported and how the project builds for WebAssembly and TinyGo. Check whether build tags can exclude Sentry without breaking normal builds; done means an opt-in or opt-out build works and the dependency is absent from the selected build.

Rédigé par le modèle d'indexation à partir du texte de l'issue.