Add LogEntryIncompleteException for malformed v2 entries

includes/exceptions.php

@@ -98,3 +98,25 @@ class ApiValidationException extends Exception {
         parent::__construct($message, $code, $previous);
     }
 }
+
+/**
+ * Exception thrown when a log entry is missing required data fields.
+ *
+ * @category Exception
+ * @package  TornVaultTracker
+ * @author   Keith Solomon <ksolomon@gmail.com>
+ * @license  Unlicense https://unlicense.org/
+ * @link     https://github.com/ksolomon/Torn-Vault-Tracker
+ */
+class LogEntryIncompleteException extends Exception {
+    /**
+     * Constructor.
+     *
+     * @param string    $message  The exception message.
+     * @param int       $code     The exception code.
+     * @param Throwable $previous The previous throwable.
+     */
+    public function __construct($message, $code = 0, Throwable $previous = null) {
+        parent::__construct($message, $code, $previous);
+    }
+}