Add failure analyzer for incorrect interface name

src/main/java/ru/serega6531/packmate/exception/PcapInterfaceNotFoundException.java

@@ -0,0 +1,15 @@
+package ru.serega6531.packmate.exception;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.util.List;
+
+@EqualsAndHashCode(callSuper = true)
+@Data
+public class PcapInterfaceNotFoundException extends RuntimeException {
+
+    private final String requestedInterface;
+    private final List<String> existingInterfaces;
+
+}