[Epic] Remote Configuration - Internal Alpha

[cmanallen]

### Web UI
- [x] [Add API blueprint](https://github.com/getsentry/sentry/pull/70805/files)
- [x] [Add API endpoints](https://github.com/getsentry/sentry/pull/70799)
- [ ] Add Web UI

### SDK
- [x] [Add protocol blueprint](https://github.com/getsentry/sentry/pull/70805/files)
- [ ] [Add Javascript SDK support](https://github.com/getsentry/sentry-javascript/pull/12090)
- [ ] [Add Python SDK support](https://github.com/getsentry/sentry-python/pull/3041)

### Documentation
- [x] [Explore Solution Space](https://www.notion.so/sentry/Remote-Config-Tech-braindump-0567916007bd453daa0e35fb95bd6761) 
- [ ] [Write Delivery Mechanism DACI and Receive Approval](https://www.notion.so/sentry/DACI-Remote-Configuration-Delivery-Mechanism-530e40d7ecc943f4a15c69d427760f9c)
- [ ] Add internal infrastructure documentation