refactor: add status command to readme (planning#1796)

java/cli/README.md

@@ -69,6 +69,26 @@ destinationId, serviceName, leikaKey, data, dataType, attachments
 ````
 > Windows paths: escape windows paths with `\\`, e.g. `C:\\path\\to\\file\\file.txt` !
 
+#### GET Submission Status Submission 
+The status command retrieves the current status of a submission by `submissionId`, `destinationId` and `caseId`.
+
+````sh
+java -jar fit-connect-cli.jar status --submissionId=308a6e4c-db16-4229-bc77-d3d6d756c8e2 --destinationId=1b7d1a24-a6c8-4050-bb71-ae3749ec432f --caseId=86308f93-64c4-4b1d-a346-d1bbc53edced
+````
+
+```text
+12:42:58.872 [main] INFO  d.f.fitconnect.cli.CommandExecutor Submission status for submission 308a6e4c-db16-4229-bc77-d3d6d756c8e2:
+ {
+  "state" : "REJECTED",
+  "issuedAt" : 1711624887000,
+  "problems" : [ {
+     "type":"https://schema.fitko.de/fit-connect/events/problems/schema-violation",
+     "title":"Schema violation",
+     "detail":"Submission metadata does not comply to schema.",
+     "instance":"metadata"
+  } ]
+}
+```
 #### Generate JWK Test Keys
 The CLI can generate public and private keys for testing purposes for both encryption and signing.
 If no ``outDir`` ist specified, the cli will create a temporary folder that is logged in the console output.