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/ClipMediaUnavailable.java

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