docs: add docs on new APIs

tests/ociswrapper/README.md

@@ -17,10 +17,13 @@ When run, **ociswrapper** starts an API server that exposes some endpoints to re
     ```bash
     ./bin/ociswrapper serve --bin=<path-to-ocis-binary>
     ```
+
     To check other available options:
+
     ```bash
     ./bin/ociswrapper serve --help
     ```
+
     ```bash
      --url string              oCIS server url (default "https://localhost:9200")
      --retry string            Number of retries to start oCIS server (default "5")
@@ -51,9 +54,9 @@ Also, see `./bin/ociswrapper help` for more information.
 
     Returns:
 
-    *   `200 OK` - oCIS is successfully reconfigured
-    *   `400 Bad Request` - request body is not a valid JSON object
-    *   `500 Internal Server Error` - oCIS server is not running
+    - `200 OK` - oCIS is successfully reconfigured
+    - `400 Bad Request` - request body is not a valid JSON object
+    - `500 Internal Server Error` - oCIS server is not running
 
 2.  `DELETE /rollback`
 
@@ -61,5 +64,63 @@ Also, see `./bin/ociswrapper help` for more information.
 
     Returns:
 
-    *   `200 OK` - rollback is successful
-    *   `500 Internal Server Error` - oCIS server is not running
+    - `200 OK` - rollback is successful
+    - `500 Internal Server Error` - oCIS server is not running
+
+3.  `POST /command`
+
+    Executes the provided command on the oCIS server. The body of the request should be a JSON object with the following structure:
+
+    ```yml
+    {
+      "command": "<ocis-command>", # without the ocis binary. e.g. "list"
+    }
+    ```
+
+    If the command requires user input, the body of the request should be a JSON object with the following structure:
+
+    ```json
+    {
+      "command": "<ocis-command>",
+      "inputs": ["value1"]
+    }
+    ```
+
+    Returns:
+
+    ```json
+    {
+      "status": "OK",
+      "exitCode": 0,
+      "message": "<command output>"
+    }
+    OR
+    {
+      "status": "ERROR",
+      "exitCode": <error-exit-code>,
+      "message": "<command output>"
+    }
+    ```
+
+    - `200 OK` - command is successfully executed
+    - `400 Bad Request` - request body is not a valid JSON object
+    - `500 Internal Server Error`
+
+4.  `POST /start`
+
+    Starts the oCIS server.
+
+    Returns:
+
+    - `200 OK` - oCIS server is started
+    - `409 Conflict` - oCIS server is already running
+    - `500 Internal Server Error` - Unable to start oCIS server
+
+5.  `POST /stop`
+
+    Stops the oCIS server.
+
+    Returns:
+
+    - `200 OK` - oCIS server is stopped
+    - `500 Internal Server Error` - Unable to stop oCIS server