20 modularize the code to split up large classes (#21)

* MODULARIZE ClipService by introducing CompressionService, MetadataService, and ThumbnailService

* ADD deleteClip functionality to ClipController

src/main/java/com/ddf/vodsystem/services/media/CommandRunner.java

@@ -0,0 +1,46 @@
+package com.ddf.vodsystem.services.media;
+
+import com.ddf.vodsystem.dto.CommandOutput;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.List;
+import java.util.function.Consumer;
+
+public class CommandRunner {
+    public static CommandOutput run(List<String> command, Consumer<String> onOutput) throws IOException, InterruptedException {
+        ProcessBuilder processBuilder = new ProcessBuilder(command);
+        processBuilder.redirectErrorStream(true);
+
+        Process process = processBuilder.start();
+        CommandOutput commandOutput = new CommandOutput();
+
+        // Read the output and error streams
+        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+        String line;
+        while ((line = reader.readLine()) != null) {
+            commandOutput.addLine(line);
+            if (onOutput != null) {
+                onOutput.accept(line);
+            }
+        }
+
+        int exitCode = process.waitFor();
+        commandOutput.setExitCode(exitCode);
+
+        if (exitCode != 0) {
+            throw new IOException("Command failed with exit code " + exitCode + ": " + String.join("\n", commandOutput.getOutput()));
+        }
+
+        return commandOutput;
+    }
+
+    public static CommandOutput run(List<String> command) throws IOException, InterruptedException {
+        return run(command, null);
+    }
+
+    private CommandRunner() {
+        // Private constructor to prevent instantiation
+    }
+}