readme: Update documentation

README.md

@@ -1,5 +1,16 @@
 # gura
 
+## API
+
+| Endpoint | Description |
+|:-:|:-:|
+| GET / | Redirect to Terra homepage |
+| GET /_health | Check if server is running. Returns version |
+| GET /api/packages/id/<id> | Get single package for ID |
+| GET /api/packages/name/<name>?all | Get packages by name. This may include multiple packages. By default this returns a combined grouping of all related packages with the same name. Passing ?all will return an array containng all valid packages. |
+| GET /api/search?q=>query>&filter=<filter> | Search for a package. Apply filters to refine search. Multiple filters can be applied. Supported filters: Name, Provides. If no filter is applied, Name is used. |
+| POST /api/ci/repo_update | Update the currently running databse. Authenticate with a JWT Bearer token with 'admin' scope |
+
 ## License
 
 Copyright (c) 2024 Fyra Labs