17 clean up services structure (#18)

* Refactor ClipService and MediaService

* Refactor ClipService for less coupling to Jobs

* PATCH unnecessary requests in frontend

* REFACTOR MetadataService to use CommandRunner

* REFACTOR DirectoryService and UploadService

* REFACTOR ClipService

* MERGE MetadataService with MediaService

src/main/java/com/ddf/vodsystem/services/JobService.java

@@ -87,7 +87,15 @@ public class JobService {
                 SecurityContextHolder.setContext(job.getSecurityContext());
             }
 
-            clipService.run(job);
+            clipService.create(
+                    job.getInputVideoMetadata(),
+                    job.getOutputVideoMetadata(),
+                    job.getInputFile(),
+                    job.getOutputFile(),
+                    job.getProgress()
+            );
+
+            job.setStatus(JobStatus.FINISHED);
 
         } catch (IOException | InterruptedException e) {
             Thread.currentThread().interrupt();