docs(api): defined vault and backup endpoints

docs/README.md

@@ -4,6 +4,12 @@ Some API endpoints require an Authorization HTTP header.
 The token for this can be aquired using the `/account/authenticate` endpoint.
 
 ## Implementation Status
+| Status | Explanation                         |
+|--------|-------------------------------------|
+| [X]    | Implemented and documented.         |
+| [ ]    | Documented but not implemented yet. |
+| (ND)   | Not documented yet.                 |
+
 - `/account`
     - [X] `/register`
     - [X] `/verify`
@@ -25,6 +31,20 @@ The token for this can be aquired using the `/account/authenticate` endpoint.
     - [X] `/create`
     - [ ] `/info`
     - [ ] `/join`
+- `/vault`
+    - [ ] `/info` (ND)
+    - [ ] `/key` (ND)
+    - `/fs`
+        - [ ] `/create` (ND)
+        - [ ] `/read` (ND)
+        - [ ] `/write` (ND)
+        - [ ] `/info` (ND)
+        - [ ] `/delete` (ND)
+- `/admin`
+    - `/backup`
+        - [ ] `/list` (ND)
+        - [ ] `/fetch/{id}` (ND)
+        - [ ] `/create` (ND)
 
 ## Examples
 An example _Register -> Verify -> Authenticate -> Delete_ flow.