feat(self-hosted): Add docs for self-hosted errors only (#1336)

* add docs for self-hosted errors only

Co-authored-by: Alex Zaslavsky <azaslavsky@users.noreply.github.com>

---------

Co-authored-by: Alex Zaslavsky <azaslavsky@users.noreply.github.com>

Author: hubertdeng123

src/docs/self-hosted/index.mdx

@@ -107,6 +107,37 @@ By default Sentry sends anonymous usage statistics to the Sentry team. It helps
 
 You can disable this feature by adding `SENTRY_BEACON = False` into `sentry.conf.py` file.
 
+## Errors-only Self-hosted Sentry
+
+**Disclaimer: This is an experimental beta feature. This means that features and workflows are not completely tested, so use at your own risk!**
+
+Starting from 24.8.0+, users will have the ability to choose between two distinct types of self-hosted Sentry deployments.
+
+**Errors Only**
+
+Errors Only self-hosted offers a small subset of features with an emphasis on minimizing system resources. This lightweight option includes only the following features:
+1. Issues
+2. Alerts
+3. Integrations
+4. Dashboards
+5. Releases
+6. Discover
+
+In order to enable errors only self-hosted, you'll need to update your [.env file](https://github.com/getsentry/self-hosted/blob/master/.env) to include `COMPOSE_PROFILES=errors-only`.
+
+**Feature Complete**
+
+This is our default version of self-hosted Sentry. It includes most of the features that are available on our SaaS product. This includes everything offered in the Errors Only version, plus the following:
+1. Traces
+2. Profiles
+3. Replays
+4. Insights (Requests, Queries, Assets, etc)
+5. User Feedback
+6. Performance
+7. Crons
+
+This version of Sentry is enabled by default upon installation. Ensure that your [.env file](https://github.com/getsentry/self-hosted/blob/master/.env) includes `COMPOSE_PROFILES=feature-complete`.
+
 ## Configuration
 
 You very likely will want to adjust the default configuration for your Sentry installation as well. These facilities are available for that purpose: