fix: move versions out of v1

API/client-server/versions.md

@@ -0,0 +1,35 @@
+GET /versions
+
+---
+
+## Request
+
+No request parameters or request body.
+
+---
+
+## Responses
+
+|Status|Description|
+|-|-|
+|200|The versions supported by the server|
+
+### 200 response
+
+|Name|Type|Description|
+|-|-|-|
+|unstable_features|string:bool|Unstable features that are supported by the server. Features not listed here indicate that a feature isn't supported.|
+|versions|list[string]|**Required**: The supported protocol versions
+
+```json
+{
+    "unstable_features": {
+        "example.feature": true
+    },
+    "versions": [
+        "2",
+        "3",
+        "4",
+    ]
+}
+```