Add iexclude and iinclude options to restore command

internal/filter/filter.go

@@ -187,3 +187,12 @@ func List(patterns []string, str string) (matched bool, childMayMatch bool, err
 
 	return matched, childMayMatch, nil
 }
+
+// InsensitiveList is the same as List but case insensitive.
+func InsensitiveList(patterns []string, str string) (matched bool, childMayMatch bool, err error) {
+	str = strings.ToLower(str)
+	for index, path := range patterns {
+		patterns[index] = strings.ToLower(path)
+	}
+	return List(patterns, str)
+}