perf(api): add HTTP range requests on media sources (#9)

Reviewed-on: https://gitea.vodsystem.ddns.net/dylan/vod-system/pulls/9

src/main/java/com/ddf/vodsystem/exceptions/VodMediaUnavailable.java

@@ -0,0 +1,18 @@
+package com.ddf.vodsystem.exceptions;
+
+public class VodMediaUnavailable extends RuntimeException {
+  private final Long vodId;
+
+  public VodMediaUnavailable(Long vodId, String message) {
+    this(vodId, message, null);
+  }
+
+  public VodMediaUnavailable(Long vodId, String message, Throwable cause) {
+    super(message, cause);
+    this.vodId = vodId;
+  }
+
+  public Long getVodId() {
+    return vodId;
+  }
+}