[MM-63556] mmctl: Add compliance export download cmd (#30576)

* add mmctl compliance export download command and tests

- Introduced `ComplianceExportDownloadCmd` to facilitate downloading compliance export files.
- Implemented the `DownloadComplianceExport` method in the Client interface for handling file downloads.
- Added unit tests for the download command, covering successful downloads, error handling for non-existent jobs, and retries on failure.
- Included end-to-end tests to validate the command's functionality.
- Updated documentation to include usage examples and options for the new command.

* don't know why this was left out

* PR comments

* adjust test for new retry logic

* refactored download fn for compliance_export and export

* fix test due to fixed logic

* docs

server/channels/api4/job_local.go

@@ -9,6 +9,7 @@ func (api *API) InitJobLocal() {
 	api.BaseRoutes.Jobs.Handle("", api.APILocal(getJobs)).Methods(http.MethodGet)
 	api.BaseRoutes.Jobs.Handle("", api.APILocal(createJob)).Methods(http.MethodPost)
 	api.BaseRoutes.Jobs.Handle("/{job_id:[A-Za-z0-9]+}", api.APILocal(getJob)).Methods(http.MethodGet)
+	api.BaseRoutes.Jobs.Handle("/{job_id:[A-Za-z0-9]+}/download", api.APILocal(downloadJob)).Methods(http.MethodGet)
 	api.BaseRoutes.Jobs.Handle("/{job_id:[A-Za-z0-9]+}/cancel", api.APILocal(cancelJob)).Methods(http.MethodPost)
 	api.BaseRoutes.Jobs.Handle("/type/{job_type:[A-Za-z0-9_-]+}", api.APILocal(getJobsByType)).Methods(http.MethodGet)
 	api.BaseRoutes.Jobs.Handle("/{job_id:[A-Za-z0-9]+}/status", api.APILocal(updateJobStatus)).Methods(http.MethodPatch)