util: add error case for invalid text scale value.

Author: narekhovhannisyan

lib/util/error.js

@@ -11,6 +11,7 @@ const CUSTOM_ERRORS = [
   'DurationGreaterThanMaxPossibleError',
   'FontNotFoundError',
   'IconAdjustableError',
+  'InvalidTextScaleValue',
   'LowerThirdAdjustableError',
   'NotImageAreaError',
   'NotTextAreaError',
@@ -46,6 +47,7 @@ const ERRORS = CUSTOM_ERRORS.reduce((acc, className) => {
  * @property DurationGreaterThanMaxPossibleError
  * @property FontNotFoundError
  * @property IconAdjustableError
+ * @property InvalidTextScaleValue
  * @property LowerThirdAdjustableError
  * @property NotImageAreaError
  * @property NotTextAreaError