[v8] Docs Changes

[AbhiPrasad]

### General
- [ ] Update docs to add more examples around new Span APIs
- [ ] Document how to override OTEL config
- [ ] Update tracing meta tag generation (https://docs.sentry.io/platforms/node/distributed-tracing/custom-instrumentation/#inject-tracing-information-to-outgoing-requests)
- [ ] Adjust our previous OTEL spanprocessor docs in favour of the new way of using OTEL APIs + Sentry APIs

### Node SDK
- [ ] Document how to use Node SDK with bundling (esp with OTEL)
- [ ] https://github.com/getsentry/sentry-javascript/issues/11395
- [ ] Add guide for Fastify
- [ ] Add guide for Nest.js
- [ ] Add guide for Hapi
- [ ] Update guide for Express
- [ ] Update guide for Koa
- [ ] https://github.com/getsentry/platformicons/issues/152

### Troubleshooting Docs
- [ ] Document `Attempted duplicate registration of API` when using HMR or reloading

### Angular SDK
- [ ] Document TraceMethod and TraceClass decorator changes
- [ ] [TBD] package name and new version compatibility
- [ ] Setup with `app.config.ts` / standalone component apps

### SvelteKit SDK
- [ ] Document that instrumentations (e.g. server fetch) might not work in dev mode due to late init of SDK

### Repo Docs
- [ ] Update event processing docs (https://github.com/getsentry/sentry-javascript/blob/develop/docs/event-sending.md)

### Spotlight
- [ ] Document that only spotlight v2 will work with v8

### Browser SDK
- [ ] Tree shaking w/ custom client (https://docs.sentry.io/platforms/javascript/configuration/tree-shaking/#tree-shaking-default-integrations)
- [ ] TryCatch -> BrowserAPIErrors rename
- [ ] Add snippet for interactions

[maxirozay]

No plan to update the tree-shaking initialization ? The getCurrentHub().bindClient(client) is depreciated and in the migration doc there's no clear indication that doesn't use init. https://docs.sentry.io/platforms/javascript/configuration/tree-shaking/

[Lms24]

@maxirozay thanks, added it to the issue ;)